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#FlashbackFriday to the Daily Princetonian in 2013, featuring research from a #PrincetonChem post doc on operational dynamic modeling. See more of @princeton_university's history at theprince.princeton.edu . . . . . . . . . #princetonu #princetagram #stemed #stemedu #stemeducation #chemistry #physics #research #postdoc
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New research from the Knowles Lab! On this occasion, they harness the enormous potential of proton-coupled electron transfer (PCET) and gear it towards yet another synthetic chemical application: the enantioselective preparation of pyrroloindoline scaffolds and of several pyrroloindoline-containing natural products. Read more in JACS! . . . . #princetonuniversity #princetagram #princetonchem #chemistry #organicsynthesis #pcet #enantioselectivity
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New research from the Chirik Lab! They describe the synthesis and study of α-diimine iron diene complexes that prove to be highly suitable for the [1,4]-selective hydrovinylation of dienes with unactivated alkene substrates. Read more in JACS! . . . . . #princetonuniversity #princetagram #princetonchem #chemistry #organometallics #inorganicchemistry #vinylation #iron
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#FlashbackFriday to the Daily Princetonian in 1912! Professor Alexander Smith, of Colombia University and President of the American Chemical Society in 1911, was a guest lecturer to the Chemical Club. The Department of Chemistry continues to put on seminars in 2018. Head to chemistry.princeton.edu/seminars-events to see who is scheduled to come talk! . . . . . #princetonuniversity #princetagram #princetonchem #chemistry
The MacMillan Lab introduces a highly efficient method for the sulfonamidation of aryl halides using Nickel as the cross-coupling mediator and iridium as a photosensitizer. The platform supports a broad collection of aryl halide substrates and sulfonamide partners and, hence, presents itself as an attractive sulfonamidation strategy for the synthesis of pharmacologically relevant scaffolds. Read more in Angewandte Chemie! . . . . . #princetonuniversity #princetagram #princetonchem #chemistry #organicsynthesis #sulfonamides #iridium #nickel #catalyist
Calling all #PrincetonU researchers, artists, and scholars! There's still time to apply for Princeton Research Day #PRD18. The deadline is this Friday, February 16th. Find out more at researchday.princeton.edu . . . . . #scicomm #research #stemed #interdisciplinary #princetonchem
The Sorensen Lab brings new research on transient directing groups (TDGs). On this occasion, they introduce orthanilic acid-based TGDs to facilitate selective C-H methylations and fluorinations at the ortho position or benzaldehydes. Read more in JACS! . . . . . #princetonuniversity #princetagram #princetonchem #chemistry #organicsynthesis #methylation #fluorination #benzaldehyde
Nickel(II) aryl halide complexes are ubiquitous species in cross-coupling and Ni-mediated photoredox reactions, yet very little is known about the photophysical properties that enable this chemistry. Now, a collaboration between the Doyle and Scholes Labs reveals that, similarly to precious-metal photocatalysts like ruthenium or iridium, the earth-abundant Ni(II) exhibits a long-lived excited state that can engage in electron transfer, thus implicating Ni(II) as an attractive alternative to costly catalysts. Read more in JACS! . . . . . #princetonuniversity #princetagram #princetonchem #chemistry #physics #photochemistry #nickel #photoredox #crosscoupling
New research from the Rabinowitz Lab shows, through isotope labeling studies in mice, that the small intestine and not the liver is in charge of clearing most dietary fructose. Read more in Cell Metabolism! . . . . . #princetonuniversity #princetagram #princetonchem #chemistry #biophysics #isotopes #fructose
New research from Prof. Dave MacMillan at the Merck Center for Catalysis here at Princeton. The team develops a method for the stereoselective α-benzylation of aldehydes enabled by photoredox catalysis, organocatalysis, and a Nature-inspired spin-center shift mechanism. More admirably, the alkylating entity is an alcohol, a moiety that, up until now, has been underutilized for these purposes because of its energetically costly activation. Read more in JACS! . . . . . #princetonuniversity #princetagram #princetonchem #chemisty #photoredox #catalysis #iridium #enamine #alkylation
Frick in the snow as seen from Jadwin ❄🌫 . . . . . #princetonuniversity #princetagram #princetonchem #chemistry #stemed
Read more about work in the Hecht Lab! Their work in artificial biology resulted in a protein functioning as an enzyme: https://t.co/sUuK26zigr . . . . . . . #proncetonuniversity #princetonchem #princetagram #chemistry #chembio #biochemistry #protein #enzyme
Now that's one nicely regenerated deuterium column! Thanks to the Chirik Group. Follow them on Twitter @chirikgroup . . . . . . #princetonuniversity #princetagram #princetonchem #realtimechem #chemistry #deuterium
#FlashbackFriday to a candid picture of Dr. William T. Richards in 1928! For more of @princeton_university's history, check out theprince.princeton.edu . . . . #princetonuniversity #princetonchem #princetagram #chemistry #history #stemed #research
Amazing contribution by the Rabinowitz Lab! In cells, folate is the main carrier of one-carbon units for the biosynthesis of larger building blocks like nucleotides and amino acids. Miss-regulation of folate-related enzymes underlies numerous pathologies, yet our full understanding of how this occurs is still incomplete. This new paper reveals that a catalytically-defective mitochondrial folate enzyme known as SHMT2 fails to generate the one-carbon folate-based donor to methylate an important residue in tRNA (τm5U). In turn, absence of τm5U inhibits the synthesis of proteins needed for mitochondrial respiration. Overall, a beautiful example of the delicate regulation present in metabolic pathways! Read more in Nature! . . . . . #princetonuniversity #princetagram #princetonchem #chemistry #biochemistry #metabolism #folate #mitochondriaisthepowerhouseofthecell
The Younger Chemists Committee (YCC) of the American Chemical Society @yccacs in the Philadelphia region is hosting a Twitter War. Tweet a picture of your daily #chemistry life using the hashtag #MyChemistry and tag @phillyycc to enter. Winners will receive a pizza party worth $150! . . . . . #stemed #stemedu #princetonchem #stemeducation #gradstudentlife #gradschoollife #realtimechem #phdchat #philly #philadelphia
Our second activity for Chemistry Saturdays @princetonpl was a demo of a non-Newtonian fluid known as oobleck, a.k.a. corn starch and water. Swipe for more pictures! . . . . #princetonuniversity #princetagram #princetonchem #princetonpubliclibrary #chemistry #chemistrysaturdays #oobleck #nonnewtonianfluid #outreach
We held this year’s first session of Chemistry Saturdays with the help of @princetonpl yesterday. In this demo, kids and families learned about density. Swipe for more pictures! . . . . . #princetonuniversity #princetagram #princetonpubliclibrary #princetonchem #chemistry #chemistrysaturdays #density #outreach
Brilliant new research by the MacMillan Lab highlights how photoredox catalysis can be put to use in chemical biological problems. By taking advantage of the distinct reduction potential of internal carboxylates (harder to oxidize) and C-terminal carboxylates (more readily oxidized), the group developed a chemo- and site-selective protein labeling method. Decarboxylation of a C-terminal carboxylate facilitated by a photo-excited flavin catalyst generates a reactive radical intermediate that can be conjugated to an olefin acceptor, thus generating a homogeneously labeled protein. This labeling platform is relatively high yielding, water compatible, and tolerant of the numerous functional groups found in proteins! Read more in Nature Chemistry! . . . . . #princetonuniversity #princetagram #princetonchem #chemistry #organicchemistry #photoredox #catalysis #flavin #shinealight
Understanding how N-H bonds in transition metal complexes reversibly form and break bonds is important for developing suitable methods to interconvert ammonia (NH3) with its elemental components, dinitrogen (N2) and dihydrogen (H2). Now, the Chirik Lab shows that one of these steps, the interconversion between molybdenum-amido an -imido species occurs by a process known as proton-couple electron transfer, or PCET. Read more in Angewandte Chemie! . . . . . #princetonuniversity #princetagram #princetonchem #chemistry #inorganicchemistry #organometallics #molybdenum #pcet
#FlashbackFriday to 2007, where students had retiring professor Maitland Jones walk the plank. See more of @princeton_university's history at theprince.princeton.edu . . . . . . . #princetonu #princetonchem #princetagram #chemistry #princetongradschool #phdchat #scicomm #gradstudentlife #gradschoollife #womeninstem #stemed #stemeducation #diversityinstem