[reaction: see text] Asymmetricallylicamination of allylic carbonates prepared from racemic Morita-Baylis-Hillman adducts proceeded in the presence of Pd catalyst, chiral diaminophosphine oxide (DIAPHOX), and BSA, affording the corresponding chiral aza-Morita-Baylis-Hillman adduct derivatives in excellent yield with up to 99% ee. The cyclic reaction products could be converted into various synthetically
Stereoselective synthesis of (E)-2-(1-hydroxyalkyl)alk-2-enenitriles via(Z)-1-cyanoalk-1-enyl anion intermediates
作者:Yoshiro Sato、Kyoko Hitomi
DOI:10.1039/c39830000170
日期:——
Fluoride ion-induced desilylation of (E)-2-trimethylsilylalk-2-enenitriles affords(Z)-1-cyanoalk-1-enyl anion intermediates, which are trapped by carbonyl compounds to give (E)-2-(1-hydroxyalkyl)alk-2-enenitriles with 100% retention of the configuration.