The synthesis of seven-and eight-membered rings by radical strategies

XC Yu, CC Zhang, LT Wang, JZ Li, T Li… - Organic Chemistry …, 2022 - pubs.rsc.org
Seven-and eight-membered rings widely exist in natural products and drugs. Considering
the transition state nonbonding interactions and torsional strains, the flexible conformations …

Baeyer–Villiger monooxygenases: tunable oxidative biocatalysts

MJLJ Fürst, A Gran-Scheuch, FS Aalbers… - ACS …, 2019 - ACS Publications
Pollution, accidents, and misinformation have earned the pharmaceutical and chemical
industry a poor public reputation, despite their undisputable importance to society …

Asymmetric induction and enantiodivergence in catalytic radical C–H amination via enantiodifferentiative H-atom abstraction and stereoretentive radical substitution

K Lang, S Torker, L Wojtas… - Journal of the American …, 2019 - ACS Publications
Control of enantioselectivity remains a major challenge in radical chemistry. The emergence
of metalloradical catalysis (MRC) offers a conceptually new strategy for addressing this and …

Synthesis of cyclohexanones by a tandem photocatalyzed annulation

AV Bay, EJ Farnam, KA Scheidt - Journal of the American …, 2022 - ACS Publications
The rapid synthesis of cyclic scaffolds is of high importance to the chemistry community.
Strategies for the convergent synthesis of substituted carbocycles and heterocycles remain …

Enantioconvergent amination of racemic tertiary C–H bonds

K Lang, C Li, I Kim, XP Zhang - Journal of the American Chemical …, 2020 - ACS Publications
Racemization is considered to be an intrinsic stereochemical feature of free radical
chemistry as can be seen in traditional radical halogenation reactions of optically active …

Asymmetric radical process for general synthesis of chiral heteroaryl cyclopropanes

X Wang, J Ke, Y Zhu, A Deb, Y Xu… - Journal of the American …, 2021 - ACS Publications
A highly efficient catalytic method has been developed for asymmetric radical
cyclopropanation of alkenes with in situ-generated α-heteroaryldiazomethanes via Co (II) …

Enantioselective radical construction of 5-membered cyclic sulfonamides by metalloradical C–H amination

Y Hu, K Lang, C Li, JB Gill, I Kim, H Lu… - Journal of the …, 2019 - ACS Publications
Both arylsulfonyl and alkylsulfonyl azides can be effectively activated by the cobalt (II)
complexes of D 2-symmetric chiral amidoporphyrins for enantioselective radical 1, 5-C–H …

Alternate heme ligation steers activity and selectivity in engineered cytochrome P450-catalyzed carbene-transfer reactions

K Chen, SQ Zhang, OF Brandenberg… - Journal of the …, 2018 - ACS Publications
We report a biocatalytic platform of engineered cytochrome P450 enzymes to carry out
carbene-transfer reactions using a lactone-based carbene precursor. By simply altering the …

Enzymatic kinetic resolution by addition of oxygen

LA Harwood, LL Wong… - Angewandte Chemie …, 2021 - Wiley Online Library
Kinetic resolution using biocatalysis has proven to be an excellent complementary
technique to traditional asymmetric catalysis for the production of enantioenriched …

Catalytic Radical Process for Enantioselective Amination of C(sp3)−H Bonds

C Li, K Lang, H Lu, Y Hu, X Cui, L Wojtas… - Angewandte …, 2018 - Wiley Online Library
A new catalytic radical system involving CoII‐based metalloradical catalysis is effective in
activating sulfamoyl azides for enantioselective radical 1, 6‐amination of C (sp3)− H bonds …