Disulfonimide-Catalyzed Asymmetric Vinylogous and Bisvinylogous Mukaiyama Aldol Reactions
作者:Lars Ratjen、Pilar García-García、Frank Lay、Michael Edmund Beck、Benjamin List
DOI:10.1002/anie.201005954
日期:2011.1.17
talk about six! A new chiral disulfonimide catalyzed vinylogous Mukaiyamaaldol addition of crotonic acid derived nucleophiles to aldehydes has been developed and the concept of vinylogy was further expanded to double vinylogous, sorbic acid derived nucleophiles. This reaction is an example of a previously unknown ε‐selective bisvinylogous MukaiyamaAldol addition that extends the substrate by six