A Branched Domino Reaction: Asymmetric Organocatalytic Two-Component Four-Step Synthesis of Polyfunctionalized Cyclohexene Derivatives
作者:Xiaofei Zeng、Qijian Ni、Gerhard Raabe、Dieter Enders
DOI:10.1002/anie.201209581
日期:2013.3.4
Take two: By employing two equivalents of an aldehyde in an asymmetric organocatalytic domino reaction, the nucleophilic enamine intermediate is also converted into the corresponding iminium species through oxidation with o‐iodoxybenzoic acid. Thus, polyfunctionalized cyclohexene derivatives are formed from two simple starting materials in good yields and stereoselectivities (see scheme; Bn=benzyl
采取两种:通过采用醛的两个当量的不对称有机催化反应多米诺,亲核烯胺中间体也与转化成相应的亚胺物种通过氧化ö -iodoxybenzoic酸。因此,多官能化的环己烯衍生物是由两种简单的起始原料形成的,具有良好的收率和立体选择性(参见方案; Bn =苄基,EWG =吸电子基团)。