Anodic oxidation of chiral sulfinylamines: a new route to highly diastereoselective α-alkylation of piperidine
摘要:
The anodic oxidation of some chiral non-racemic N-arylsulfinyl piperidines was investigated and for the first time alpha methoxylated sulfinyl piperidines were obtained. The so-formed compounds are equivalent of chiral N-sulfinyliminiums and used as new intermediates for the preparation of chiral alpha-substituted piperidine derivatives in good yield and diastereoselectivity. (c) 2005 Elsevier Ltd. All rights reserved.
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
Here, we developed a new cobalt nanocatalyst supported on N–SiO2-doped activated carbon (Co/N–SiO2–AC), which exhibits excellent catalytic performance towards the oxidative esterification of (hetero)aryl and alkyl thiols with alcohols. A wide array of sulfinic esters were efficiently afforded in an exclusive chemoselective manner. The developed synthetic method proceeds with the merits of mild reaction
Palladium-Catalyzed Sulfinylation of Aryl- and Alkenylborons with Sulfinate Esters
作者:Minori Suzuki、Kazuya Kanemoto、Yu Nakamura、Takamitsu Hosoya、Suguru Yoshida
DOI:10.1021/acs.orglett.1c01292
日期:2021.5.7
An efficient, direct sulfinylation of organoborons catalyzed by palladium is disclosed. Treatment of organoborons and sulfinate esters in the presence of a palladium precatalyst provided a broad range of sulfoxides. Various organosulfur compounds having oxidizable functional groups were successfully prepared through the sulfoxide synthesis.
COMPOSITION, SYNTHESIS, AND USE OF NEW ARYLSULFONYL ISONITRILES
申请人:DUQUESNE UNIVERSITY OF THE HOLY GHOST
公开号:US20150239833A1
公开(公告)日:2015-08-27
This invention relates to novel isonitriles, including arylsulfonyl isonitriles, and methods for their synthesis. The isonitriles include a conjugated ring system. The structure is designed with the flexibility to have multiple substitution patterns. The isonitriles may be used in applications including, but not limited to, pharmaceutical compositions.
Using sulfinamides as a new reagent for preparation of asymmetrical thioethers has been developed undermetal-freeconditions. The reactions proceeded smoothly without the use of stinky thiophenol, highly toxic sulfonyl chloride or oxidant. Such a simple, efficient transformation provides an attractive approach to various diaryl sulfides in good to excellent yields.