One-Pot Synthesis of Polysubstituted Pyrrolidines from Aminonitriles
作者:Till Opatz、Nino Meyer、Frank Werner
DOI:10.1055/s-2005-861838
日期:——
α-Aminonitriles with a mono- or unsubstituted amino group as well as α-(alkylideneamino)nitriles can be employed as easily accessible α-aminocarbanion equivalents. Their α-deprotonation yields stabilized carbanions, which undergo smooth 1,4-addition to α,β-unsaturated carbonyl compounds. The resulting δ-keto-α-aminonitriles can be reductively cyclized to form polysubstituted pyrrolidines.
1-arenesulfonyl-2-aryl-pyrrolidine and pyridine derivatives
申请人:Hoffmann- La Roche Inc.
公开号:US06284785B1
公开(公告)日:2001-09-04
1-Arenesulfonyl-2-Aryl-pyrrolidine and pyridine derivatives having activity as ligands of metabotropic glutamate receptors of the formula
are disclosed.
Catalyst-free electrochemical sulfonylation of amines with sulfonyl hydrazide in aqueous medium
作者:Wei Chen、Haojian Xu、Run Wu、Yang Chen、Pingbing Yu、Yanxi Jin
DOI:10.1039/d3ob00690e
日期:——
with sulfonyl hydrazides under exogenous-oxidant-free and catalyst-free conditions in aqueous medium was developed. A wide variety of sulfonamides were prepared via a simple electrochemical process from various cyclic or acyclic secondary amines, as well as more challenging free primary amines with equivalent amount of aryl/heteroaryl hydrazides in air under mild conditions. This protocol was found