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Mark Levin

@levinchem.bsky.social
2.6K followers 979 following 257 posts

Professor of Chemistry University of Chicago Single-Atom Skeletal Editing Husband, Dad, Crossword Addict levingroup.uchicago.edu According to at least one colleague: "clinging to the past"

PostsRepliesMedia
Mark Levin @levinchem.bsky.social · 29/09/2026
Wow, the butlerian jihad actually makes economic sense, who would have thought
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Ed Zitron @edzitron.com · 29/09/2026
Reuters got some of the IPO docs. Anthropic is a total dog of a company. Spent $12.6bn to make $4.6bn in revenue in 2025, $7.33bn of which was compute costs. Operating loss of $8bn. Losses getting worse year over year. Amazing stuff www.reuters.com/business/fin...
Summary
Companies
• Anthropic IPO could value the company at more than $2
trillion
• Anthropic lost $42 billion in 2025
• Al lab spent $7.33 billion on compute and infrastructure last year
• Operating loss widened to $8.06 billion in 2025 from $2.98 billion in 2024
• Execs, industry analysts have expressed concerns over harms of Al tech
Sept 28 (Reuters) - Anthropic is making a massive bet that Al will transform the global economy more profoundly than industrialization, electricity and the internet, according to its IPO prospectus seen by Reuters.
But the cost to get there will be staggering. Anthropic reported a net loss of $42 billion in 2025, and plans to spend $518 billion on cloud, computing and infrastructure obligations in coming year, according to the
prospectus.
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Melanie Mitchell @melaniemitchell.bsky.social · 28/09/2026
👀 Florida attorney general to OpenAI: (www.myfloridalegal.com/sites/defaul...)
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C&EN (Chemical & Engineering News) @cenmag.bsky.social · 28/09/2026
A new atom-swapping reaction gives chemists a versatile tool for replacing aromatic carbons with nitrogen in complex molecules. The atomic switcheroo will help drugmakers explore how pharmaceutical leads and natural products respond to tiny structural tweaks known as skeletal editing. #chemsky 🧪
cen.acs.org
Skeletal-editing ‘dream’ realized
Second-generation C-to-N swap turns the first generation’s failure into a feature
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Mark Levin @levinchem.bsky.social · 28/09/2026
Anyone willing to replace students with tokens doesn't understand what it is universities do and probably should never have been allowed to have students to begin with
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Colette Delawalla, PhD @cdelawalla.bsky.social · 28/09/2026
The humanities have been calling out genAI theft since the jump, while STEM has rallied around “discovery potential”. I am *ONCE AGAIN* reminding EVERYONE that science is not the sacred cow, STEM isn’t the exception. They are going to steal our IP, too. We aren’t special.
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Kevin A. Scott, PhD @sculpturatus.bsky.social · 28/09/2026
man it's been a wild year so far. lots of approvals including many first in class.
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Carl T. Bergstrom @carlbergstrom.com · 27/09/2026
Ignore for a moment the question about whether Anthropic trains on user sessions. I am I right in reading this as saying that Anthropic's "never-before-discovered" reverse transcriptase was *patented* three years ago?
Dr. Mestre first encountered the enzymes in jumbo phages in 2022 while searching for new reverse transcriptases. He worked briefly as a consultant for ReNegade Therapeutics, which filed a patent in 2023 on a number of reverse transcriptases, including the ones Dr. Mestre found. He is listed as a co-inventor on the patent filing.
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Overheard at C&EN @censays.bsky.social · 25/09/2026
"Why are people so fascinated with skeletal editing?" "Halloween is coming up"
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Matt Hartings @matthartings.bsky.social · 24/09/2026
The New ACS/ACS Pubs website is driving me batty I don’t have enough hair to keep pulling out. chemchat chemsky
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Bri Barbu @bribarbu.bsky.social · 25/09/2026
Can I use my work card to buy a skeleton outfit for the Phoebe Bridgers concert next week if I then use it to make a video about skeletal editing? (For legal reasons this is a joke! I use work funds responsibly!)
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Dave Palmer @davepalmerusask.bsky.social · 25/09/2026
Or they should be genuinely abstract
static.klipy.com
Jackson Pollock Drip Painting
Alt: Jackson Pollock Drip Painting
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Mark Levin @levinchem.bsky.social · 25/09/2026
Hot take: ACS talks in invited sessions should not have titles and abstracts
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Bethany Halford @bethanyhalford.bsky.social · 24/09/2026
This skeletal editing reaction from @levinchem.bsky.social looks simple on its surface, but the overall transformation is incredibly complex. My latest for @cenmag.bsky.social cen.acs.org/synthesis/sk...
cen.acs.org
Skeletal-editing ‘dream’ realized
Second-generation C-to-N swap turns the first generation’s failure into a feature
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Mark Levin @levinchem.bsky.social · 24/09/2026
Thanks @bethanyhalford.bsky.social for this wonderful write-up about our work! cen.acs.org/synthesis/sk...
cen.acs.org
Skeletal-editing ‘dream’ realized
Second-generation C-to-N swap turns the first generation’s failure into a feature
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Mark Levin @levinchem.bsky.social · 24/09/2026
Now online @science.org! www.science.org/doi/10.1126/...
science.org
Embracing triplet nitrenes for C-to-N replacement of complex bicyclic (hetero)aryl azides
Despite recent proof-of-concept advances, aromatic carbon-to-nitrogen replacement reactions remain substrate specific and exhibit an overreliance on harsh oxidation methods that preclude their deploym...
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Mark Levin @levinchem.bsky.social · 21/09/2026
Applications to the UChicago PhD program are open! chemistry.uchicago.edu/graduate-pro... Please check out the information sessions too - anyone who *registers* *and* *attends* an info session will get a fee waiver code sent to them after the session!
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Brendan @chemscrapes.bsky.social · 19/09/2026
This one was worth doing up. The rejection scene from JACS and the beanstalk. @jacs.acspublications.org @pubs.acs.org @acs.org #chemchat
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Mary Lewis @profmarylewis.bsky.social · 16/09/2026
Excellent oped in @theharvardcrimson.bsky.social by my @harvard.edu colleague Jill Lepore. www.thecrimson.com/article/2026...
But of course, the machine conversation is not free. It comes at the cost of our common life together as teachers, learners, and researchers, colleagues, mentors, and friends. Not to mention, supervising student researchers is our job.
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Benjamin Tausig @burrata.bsky.social · 15/09/2026
Hi! I'm a university president, seeking advice about AI. On one hand, AI actively guts education and might kill everyone. But on the other hand, taking money from AI companies means becoming dependent on an industry that could crash at any moment. So should we go all in?
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Mark Levin @levinchem.bsky.social · 15/09/2026
I don't want to over-apply econ 101, but I can think of one policy for managing industries with negative externalities: 👏🏻To👏🏻ken 👏🏻Tax👏🏻es (👏🏻And 👏🏻Li👏🏻a👏🏻bil👏🏻i👏🏻ty)
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Dan Garisto @dangaristo.bsky.social · 14/09/2026
Breaking: Judge Saylor postpones the DHS rule terminating duration of status (i.e. restricting international students to 4 years) a day before it would have taken effect. He denies the request to vacate the rule itself at this time, though. storage.courtlistener.com/recap/gov.us...
IV. Conclusion
For the foregoing reasons, plaintiffs’ motion for APA § 705 relief, a preliminary
injunction, or, in the alternative, summary judgment, is GRANTED to the extent that it seeks to
postpone the effective date of the Final Rule pursuant to the Administrative Procedure Act, 5
U.S.C. § 705. To the extent that plaintiffs seek vacatur of the Final Rule, summary judgment, or
other relief, the motion is DENIED without prejudice to its renewal.
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Michael Clemens @mclem.org · 12/09/2026
The US President's new proposal to tax international students has been approved by the White House for release this week. It's an unprecedented $100,000 tax on int'l grads who stay to work after graduation on Optional Practical Training (most grads do), a crucial bridge to remaining by any channel.
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Quantian @quantian.bsky.social · 08/09/2026
Dancing very very VERY close to saying “OpenAI stole our almost-complete proof of Navier-Stokes from internal access to our ChatGPT sessions because they were desperate to scoop Anthropic” which is absolutely 100% a believable thing OpenAI would do right now cims.nyu.edu/~tristanb/st...
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Mark Levin @levinchem.bsky.social · 08/09/2026
My department is searching at the assistant level across all areas of chemistry - come be my colleague! academicjobs.uchicago.edu/positions/19...
academicjobs.uchicago.edu
Academic Jobs | The University of Chicago
The University of Chicago is a private, nondenominational, culturally rich and ethnically diverse coeducational research university located in Hyde Park, Chicago.
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Jeff Sharlet @jeffsharlet.bsky.social · 06/09/2026
I’m a Dartmouth professor. Pres. Beilock implies in this piece that she speaks for us as a college. She does not. I don’t permit AI in my classroom. Not because it stole my work; because as I wrote in @chronicle.com, most of my students hate it—and feel betrayed by the college—even more than I do.
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Matt ”read the syllabus” L @matt18l.bsky.social · 05/09/2026
I remember when the first web browsers came out (yes, I'm that old). They early ones were not that useful but the potential of the world wide web was easy to grasp. It was fun to use them and see where the possibilities were for HTML. I get no sense of the same possibilities from AI.
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Jonathan Rosenblum @jsrosenblum.bsky.social · 04/09/2026
lots of good book ideas around imatinib. 1. Discovery of the drug& Philadelphia chromosome --> deadly disease now chronic condition 🎉 2. How the amazing efficacy of the first clinically useful kinase inhibitor led to vast sums of time/money developing mostly barely useful kinase inhibitors 😰
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In Preparation @inprep.bsky.social · 02/09/2026
inpreparation.substack.com
Anthropic Expands AI For Science Program In Hopes Someone Will Love It
SAN FRANCISCO, CA—Anthropic announced an expansion of their new AI for Science initiative Thursday in the hope that helping cure diseases might make people feel warmly toward the artificial…
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Bri Barbu @bribarbu.bsky.social · 01/09/2026
Also I feel compelled to add that if you know anything more about the situation and wish to send a tip there are myriad secure ways to contact me and my colleagues: cen.acs.org/static/about...
cen.acs.org
Contact Our Newsroom
We are the world's most comprehensive and authoritative source of news about chemistry and related fields
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Mark Levin @levinchem.bsky.social · 31/08/2026
Honored to be selected for the ACS Award in Pure Chemistry, and doubly proud that my former graduate student @chemiejisoo.bsky.social, now a postdoc with Eric Jacobsen was selected for the Nobel Laureate Signature Award: cen.acs.org/acs-news/acs...
cen.acs.org
ACS names 2027 National Award winners
The winners are being acknowledged for their outstanding achievements in chemistry across various fields in the discipline
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Mark Levin @levinchem.bsky.social · 28/08/2026
I don't mean to be hyperbolic, but the NYT Games app moving the crossword down from the top of the app is a sign of the end times
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Bri Barbu @bribarbu.bsky.social · 25/08/2026
Nixed title: "O no, here comes another atom swap story!" But seriously this is some cool skeletal editng work from @levinchem.bsky.social and squad. Just 3 easy steps to turn an $11/g molecule into a $2300/g one! #chemsky @cenmag.bsky.social cen.acs.org/synthesis/sk...
cen.acs.org
Skeletal editing helps chemists access elusive pyrroles
Oxygen-to-carbon swap expands synthesis options for 5-membered aromatics
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mattie lubchansky @mattielubchansky.com · 24/08/2026
the way of the future | patreon.com/lubchansky

PANEL 1: MATTIE is looking down. A SECOND PERSON is on the ground.
MATTIE: WHAT ARE YOU DOING DOWN THERE?
PERSON: OH I'M MOVING AROUND LIKE A LITTLE WORM.

PANEL 2: Closer in on the PERSON, who smiles beatifically.
MATTIE: SEEMS UNCOMFORTABLE.
PERSON: IT'S THE FUTURE! ALL THE BIG MONEY IS ON IT, MANY ARTICLES AND LEADING FIGURES ARE SAYING IT AS WELL.
PERSON: WHO AM I TO ARGUE!

PANEL 3: MATTIE puts a hand to her chin.
MATTIE: I JUST DON'T SEE THE BENEFIT. FOR MY OWN LIFE.
PERSON: YOU CAN EITHER GET WITH IT OR PERISH IN THE FUCKING DUST, OLD WOMAN.

PANEL 4: The PERSON holds up their phone. On it is a photo of a tech CEO-looking guy on the ground, being interviewed by a journalist
TEXT: DAVOS 
TEXT: CEO OF SquirmX SAYS WRITHING AROUND WILL ACCOUNT FOR 700% OF US ECONOMY WITHIN 2 MONTHS
PERSON: THAT'S A DIRECT QUOTE.
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Nature @nature.com · 21/08/2026
Nature research paper: Synthesis of pyrroles from isoxazoles by an O-to-C skeletal edit go.nature.com/4xREd0O
go.nature.com
Synthesis of pyrroles from isoxazoles by an O-to-C skeletal edit - Nature
A one-pot skeletal-editing reaction replaces isoxazole oxygen with carbon to form challenging pyrroles, enabled by an N-propargylic enaminone intermediate and a computational model predicting reaction outcomes.
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Voltaireon - 5 caustic French philosophers in a trenchcoat @shaidorsai.bsky.social · 20/08/2026
I generally reject re-written C&H, but I gotta say this is about as on-point as I’ve ever seen one be. (I’ve commented elsewhere with this, but it retains its relevance, alas)
A four panel Calvin & Hobbes strip, with the dad saying:

There are only two industries left in America: gambling, and fraud
Derivatives? Gambling.
AI? Fraud.
Video games? Gambling.
Social media? Fraud.
The stock market looks like gambling, but it's actually fraud.
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Mark Levin @levinchem.bsky.social · 19/08/2026
What is the heterocyclic variant of carbonyl olefination? Today we report isoxazole-to-pyrrole O-to-C replacement - check out the full story here: www.nature.com/articles/s41...
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Henry Mance @henrymance.ft.com · 19/08/2026
Woah.
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Anderson Lab at UChicago Chemistry @jsandersonlab.bsky.social · 18/08/2026
We're excited to welcome friends and alumni to Chicago next week for #ACS2026. If you're in town and want to say hi, come swing by our alumni and friends event on Monday August 24th.
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Charlie Warzel @cwarzel.bsky.social · 18/08/2026
convinced we are living through a societal gas leak of some kind
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Dan Silverman @dmsilverman.bsky.social · 18/08/2026
I‘m far from an AI doomer, but it is amazing how many serious voices — on LinkedIn, no less! — are sharing stories about how AI slop is quickly becoming one of the top problems they see in academic writing and research “AI will 10x our research!” doesn’t seem to be surviving encounters with reality
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Nature Chemistry @natchem.nature.com · 18/08/2026
Regiospecific α-arylation of diverse carbonyl compounds using an organobismuth transporter #chemsky
dlvr.it
Regiospecific α-arylation of diverse carbonyl compounds using an organobismuth transporter
Nature Chemistry, Published online: 18 August 2026; doi:10.1038/s41557-026-02231-5The α-arylation of carbonyl compounds remains a central challenge in chemical synthesis. Now it has been shown that BisTrip, a recyclable aryl group transporter, enables rapid and regiospecific α-arylation of diverse carbonyl compounds, providing access to challenging arylated ketones including quaternary carbon centres within intricate molecules.
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Carl Quintanilla @carlquintanilla.bsky.social · 17/08/2026
* Why Big Tech’s AI Spending Is $3 Trillion Higher Than It Seems @wsj.com www.wsj.com/tech/ai/why-...
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Mark Levin @levinchem.bsky.social · 12/08/2026
A wonderful tribute to a great chemist: onlinelibrary.wiley.com/doi/10.1002/...
onlinelibrary.wiley.com
Henning Hopf (1940–2026): A Role Model in Chemistry and Beyond
sHenning Hopf, retired Professor of Organic Chemistry at the Technical University of Braunschweig, passed away on March 12, 2026. He will be remembered not only for his groundbreaking contributions t....
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Jayhawk @jayhawk22.bsky.social · 11/08/2026
I mean, isn't Mohicans considered like a middle school reading level kind of novel?
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Jake Yeston @jakeyeston.bsky.social · 08/08/2026
“a one-paragraph provision banning OMB from finalizing and issuing new rules unveiled in late May […] was championed by Senator Susan Collins, chair of the Senate appropriations committee. She had urged OMB director Russell Vought to pull back the proposed changes, calling them ‘deeply flawed.’”
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Dave Palmer @davepalmerusask.bsky.social · 06/08/2026
Sorry for saying the new logo was the Death Star when in fact it’s the inter dimensional space travel contraption from Contact!
static.klipy.com
Contact Movie: Mysterious Ocean Structure
Alt: The gigantic gyroscope-like structure from the movie Contact (1997).
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Mark Levin @levinchem.bsky.social · 05/08/2026
Something something strange bedfellows www.nytimes.com/2026/08/04/o...
nytimes.com
Opinion | I’m Begging You: Never Write With A.I.
It’s bad for your brain and worse for democracy.
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Mark Levin @levinchem.bsky.social · 04/08/2026
This well-meaning article falls into a familiar trap - after detailing how AI is failing on scale in her role as CIO, the author credulously asserts thats it does work for drug discovery. www.nytimes.com/2026/08/03/o... Reminds me of this: inpreparation.substack.com/p/scientists...
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Ed Zitron @edzitron.com · 31/07/2026
This brings me to an amusing point. If a community fights back against a planned data center, delaying the approval process, they’ll inevitably make it vastly, vastly more expensive to build, costing the developer millions or billions. www.wheresyoured.at/premium-ai-is-getting-way-too-expensive/
There hasn’t been much joy in this newsletter. Mirth, sure. I can be acerbic when I want to, and my acerbities can be funny at times. Mirth, however, is not the same thing as joy. 

The next line should change that: 

Every time a community delays an AI data center project, it makes the project itself more expensive and means that the chance of it actually becoming profitable goes down. 
I’m constantly being asked how we fight back. Based on my reading of the numbers, this is how. 

Let’s suppose that a data center developer comes to your town and wants to buy a bunch of farmland to turn into a bunch of noisy, heat-spewing, fume-spewing Borg Cubes filled with AI GPUs. 

And let’s suppose that, instead of rolling over, you fight back along with your community — going to town halls, lobbying local government officials to vote against the plans, and just generally being a (lawful) nuisance to the developers.

Instead of approval being rubber-stamped, or treated as an inevitability, you drag out the process for as long as possible.

Even if they win, you’ve cost the developers millions — and potentially billions — of dollars, assuming the price of certain materials and commodities maintain their current trajectories. 

That’s because, as I’ve mentioned, the cost of AI infrastructure is growing so fast. Literally, every month counts. The faster work starts and is completed, the better it is for the developer and operator — and the more likely that their facility will actually be profitable.

Of course, even if they win the initial fight, you might still be able to drag the developer in court, or find some kind of redress from your state government that your local government was unable to provide. 

In Minnesota, for example, two massive developments — including one backed by Google — were stayed by order of a judge after it found that local officials and developers had failed to ensure the required environmental surveys were performed. 

Again, AI data centers are campuses of buildings — and procurement likely takes place over a lengthy timeline, which means that any delay makes this shit more expensive. 

And so, want to fuck with Sam Altman? Want to fuck with Nadella and Pichai and Zuckerberg and Jassy? Want to make Larry Ellison cry? 

Get involved in local politics and make their lives a fucking nightmare.
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