Solution and flash vacuum pyrolyses of 3-arylpropanesulfonyl and 2-(aryloxy)ethanesulfonyl azides. Synthesis of 7- and 8-membered sultams
作者:Rudolph A. Abramovitch、Albert O. Kress、Samuel P. McManus、Maurice R. Smith
DOI:10.1021/jo00191a014
日期:1984.8
Enantioselective Radical Construction of 5-Membered Cyclic Sulfonamides by Metalloradical C–H Amination
作者:Yang Hu、Kai Lang、Chaoqun Li、Joseph B. Gill、Isaac Kim、Hongjian Lu、Kimberly B. Fields、McKenzie Marshall、Qigan Cheng、Xin Cui、Lukasz Wojtas、X. Peter Zhang
DOI:10.1021/jacs.9b08894
日期:2019.11.13
azides can be effectively activated by the cobalt(II) complexes of D2-symmetric chiral amidoporphyrins for enantioselective radical 1,5-C-H amination to stereoselectively construct 5-membered cyclic sulfonamides. In addition to C-H bonds with varied electronic properties, the Co(II)-basedmetalloradical system features chemoselectiveamination of allylic C-H bonds and is compatible with heteroaryl groups
Synthesis of Sultams and Cyclic <i>N</i>-Sulfonyl Ketimines via Iron-Catalyzed Intramolecular Aliphatic C–H Amidation
作者:Dayou Zhong、Di Wu、Yan Zhang、Zhiwu Lu、Muhammad Usman、Wei Liu、Xiuqiang Lu、Wen-Bo Liu
DOI:10.1021/acs.orglett.9b01732
日期:2019.8.2
unique role in drug discovery and synthetic chemistry. A direct synthesis of sultams by an intramolecular C(sp3)–H amidation reaction using an iron complex in situ derived from Fe(ClO4)2 and aminopyridine ligand is reported. This strategy features a readily available catalyst and tolerates a broad variety of substrates as demonstrated by 22 examples (up to 89% yield). A one-pot iron-catalyzed amidation/oxidation