DBU-promoted condensation of acyldiazomethanes to aldehydes and imines under catalytic conditions
作者:Nan Jiang、Jianbo Wang
DOI:10.1016/s0040-4039(01)02375-9
日期:2002.2
The condensation of acyldiazomethanes to aldehydes and imines can be promoted with catalytic amount of DBU. The condensation gives β-hydroxy α-diazo carbonyl compounds or β-amino α-diazo carbonyl compounds in high yields.
1,2-Migration in Rhodium(II) Carbene Transfer Reaction: Remarkable Steric Effect on Migratory Aptitude
作者:Fengping Xiao、Jianbo Wang
DOI:10.1021/jo0605391
日期:2006.7.1
been prepared in order to investigate the stericeffect in 1,2-migration reaction of rhodium(II) carbene. Through the investigation on the diazo decomposition of these compounds with Rh2(OAc)4, it was found that the stericeffect could dramatically influence the migratory aptitude. In many cases, the stericeffect could override the inherent electronic effect of the substituent.