p-Tolylsulfinyl Amides: Reagents for Facile Electrophilic Functionalization of Olefins
摘要:
A variety of olefins were found to react with sulfinyl amides in the presence of POCl3 to give beta-chlorosulfides and beta-hydroxysulfides in good yields. In the absence of nucleophiles, p-tolylsulfinyl amides were found to react with olefins with the formation of allylsulfoxides.
Rare-Earth-Catalyzed Transsulfinamidation of Sulfinamides with Amines
作者:Daheng Wen、Qingshu Zheng、Chaoyu Wang、Tao Tu
DOI:10.1021/acs.orglett.1c01106
日期:2021.5.7
transsulfinamidation of primary sulfinamides with alkyl, aryl, and heterocyclicamines for the synthesis of diverse secondary and tertiary sulfinamides has been realized. Unlike transition metal-catalyzed cross-coupling approaches restricted to non-commercially available disubstituted O-benzoyl hydroxylamines, this newly developed protocol is suitable for diverse readily available primary and secondary amines without
develop a simple and convenient method for the Ni/NHC-catalyzed cross-coupling of methyl sulfinates and amines without an acid/base to afford secondary or tertiary sulfinamides in moderate to good yields. The method can provide the desired products with broad substrate scope, good chemoselectivity and good functional group compatibility. The presented approach may enrich the Ni/NHC catalyst system and
One-pot syntheses of sulfinates, sulfinamides, and thiosulfinates by O-, N-, and S-sulfinylations of alcohols, amines, and thiols with p-toluenesulfinic acid in the presence of various activating reagents, phenyl phosphorodichloridate (1), diphenyl phosphoro-chloridate (2), triphenylphosphine N-chlorosuccinimide (NCS) (3), and 3-(phthalimidoxy)-1, 2-benzoisothiazole 1, 1-dioxide (4), were investigated. All of these reagents were reasonably effective for O-and S-sulfinylation, but ineffective for N-sulfinylation. Among them, the reagents 1 and 2 were slightly more efficient than the others.
Copper‐Catalyzed Transsulfinamidation of Sulfinamides as a Key Step in the Preparation of Sulfonamides and Sulfonimidamides
作者:Hao Yu、Zhen Li、Carsten Bolm
DOI:10.1002/anie.201810548
日期:2018.11.19
sulfinamides are prepared by copper‐catalyzed transsulfinamidation of primary sulfinamides with O‐benzoyl hydroxylamines. Subsequent oxidations of the resulting products lead to the corresponding sulfonamides. Treatment of N‐aryl sulfinamides with O‐benzoyl hydroxylamines under copper catalysis provides N‐aryl sulfonimidamides.
Compounds of the present invention, and pharmaceutically acceptable compositions thereof, are useful as modulators of ATP-Binding Cassette (“ABC”) transporters or fragments thereof, including Cystic Fibrosis Transmembrane Conductance Regulator (“CFTR”). The present invention also relates to methods of treating ABC transporter mediated diseases using compounds of the present invention.