1,2-Vinyl and 1,2-Acetylenyl Migration in Rh(II) Carbene Reaction: Remarkable Bystander Effect
作者:Weifeng Shi、Fengping Xiao、Jianbo Wang
DOI:10.1021/jo050173c
日期:2005.5.1
Rh(II)-catalyzed reaction was investigated. 1,2-Migration was the predominant reaction pathway, and the migratory aptitude was found to be dramatically affected by the β-substituents. The 1,2-vinyl and 1,2-acetylenyl group migration occurs preferentially in the presence of β-hydrogen in Rh2(OAc)4-catalyzed reaction of β-(trichloroacetyl)amino α-diazo carbonyl compounds. A possible reaction mechanism is discussed
合成了一系列的β-(三氯乙酰基)氨基α-重氮羰基化合物,并研究了它们的Rh(II)催化反应。1,2-迁移是主要的反应途径,迁移倾向受β-取代基的影响很大。1,2-乙烯基和1,2-乙炔基迁移优先在β-(三氯乙酰基)氨基α-重氮羰基化合物的Rh 2(OAc)4催化的β-氢存在下发生。讨论了可能的反应机理。