SuFEx Reactions of Sulfonyl Fluorides, Fluorosulfates, and Sulfamoyl Fluorides Catalyzed by N-Heterocyclic Carbenes
作者:Muze Lin、Jinyun Luo、Yu Xie、Guangfen Du、Zhihua Cai、Bin Dai、Lin He
DOI:10.1021/acscatal.3c03820
日期:2023.11.17
Sulfur(VI) fluorideexchange (SuFEx) click chemistry provides a powerful tool for the rapid assembly of modular connections. Herein, we report an organocatalytic SuFEx reaction of sulfonyl fluorides, fluorosulfates, and sulfamoyl fluorides. Under the catalysis of 10 mol % N-heterocyclic carbene (NHC), or under the relay catalysis of NHC and HOBt, different SuFExable hubs efficiently undergo click reactions
HUTCHINS ROBERT O.; CISTONE FRANK; GOLDSMITH BARRY; HEUMAN PAUL, J. ORG. CHEM. <JOCE-AH>, 1975, 40, NO 13, 2018-2020
作者:HUTCHINS ROBERT O.、 CISTONE FRANK、 GOLDSMITH BARRY、 HEUMAN PAUL
DOI:——
日期:——
Stereoinversion of Unactivated Alcohols by Tethered Sulfonamides
作者:Paul T. Marcyk、Latisha R. Jefferies、Deyaa I. AbuSalim、Maren Pink、Mu‐Hyun Baik、Silas P. Cook
DOI:10.1002/anie.201812894
日期:2019.2.4
remains an undeveloped area of organic synthesis. Moreover, catalytic activation of this difficult electrophile with predictable stereo-outcomes presents an even more formidable challenge. Described herein is a simple iron-based catalyst system which provides the mild, direct conversion of secondary and tertiary alcohols to sulfonamides. Starting fromenantioenriched alcohols, the intramolecular variant
Herein, we disclose a transition-metal-free reaction system that enables α-cyanation of sulfonamides through C–H bond cleavage for the preparation of α-amino nitriles, including difficult-to-access all-alkyl α-tertiary scaffolds. More than 50 substrate examples prove a wide functional group tolerance. Additionally, its synthetic practicality is highlighted by gram-scalability and the late-stage modification