Expedient Synthesis of Highly Substituted Pyrroles via Tandem Rearrangement of α-Diazo Oxime Ethers
作者:Yaojia Jiang、Wei Chuen Chan、Cheol-Min Park
DOI:10.1021/ja300552c
日期:2012.3.7
An efficient rhodium-catalyzed synthesis of 2H-azirines and pyrroles has been developed. Novel rearrangement of α-oximino ketenes derived from α-diazo oxime ethers provides 2H-azirines bearing quaternary centers and allows for subsequent rearrangement to highly substituted pyrroles in excellent yields.
An iodoxybenzoic acid-mediated selected oxidative cyclization of N-hydroxyalkyl enamines was developed. Through this strategy, a variety of 2,3-disubstituted pyrroles and pyridines were produced in good selectivity involving oxidation of alcohol, followed by condensation of aldehyde and α-C of enamines. Furthermore, this metal-free method has several advantages, including the use of environmentally
[EN] METHOD FOR PREPARING 2H-AZIRINE CARBOXYLIC ESTERS<br/>[FR] PROCÉDÉ DE PRÉPARATION D'ESTERS CARBOXYLIQUES DE 2H-AZIRINE
申请人:UNIV NANYANG TECH
公开号:WO2013081549A1
公开(公告)日:2013-06-06
The invention relates to a method for preparing 2H-azirine carboxylic esters. More specifically, the invention relates to a method for preparing 2H-azirine carboxylic esters starting from α-diazo-β-keto oxime ethers in the presence of a rhodium (II)-based catalyst.
Organische Synthesen mit Übergangsmetall-Komplexen XLV. 3-Hydroxypyridine, 1H-Pyrrole und 2-Hydroxypyrrol-Derivate aus einem Aminocarben-Chromkomplex und Alkinen
作者:Rudolf Aumann、Heinrich Heinen
DOI:10.1016/0022-328x(90)85399-j
日期:1990.6
Studies on cycloaddition reactions of 1,3-diphenyl-2-azaallyl lithium and ethyl (benzylideneamino) acetate anion with α-oxoketene dithioacetals
作者:Maliakel P. Balu、Hiriyakkanavar Ila、Hiriyakkanavar Junjappa