Asymmetric Methoxyselenenylations and Cyclizations with 3-Camphorseleno Electrophiles Containing Oxime Substituents at C-2. Formation of an Unusual Oxaselenazole from an Oxime-Substituted Selenenyl Bromide
作者:Thomas G. Back、Ziad Moussa、Masood Parvez
DOI:10.1021/jo016061c
日期:2002.1.1
in a highly diastereoselective manner. The free oxime 6b was particularly effective in such methoxyselenenylations, giving diastereomeric ratios (d.r.s) ranging from 86:14 to > 98:2. Even cis-disubstituted alkenes, which typically give poor d.r.s in similar additions with other chiralseleniumelectrophiles, underwent highly stereoselective additions with this reagent. Reductive deselenizations of