Diazepane Carboxylates as Organocatalysts in the Diels-Alder Reaction of α-Substituted Enals
作者:Nicklas O. Häggman、Benjamin Zank、HyunJune Jun、Dainis Kaldre、James L. Gleason
DOI:10.1002/ejoc.201801009
日期:2018.10.24
Diazepane carboxylates efficiently catalyze the Diels–Alder cycloaddition of α‐substituted enals with a range of dienes. With chiral diazepane backbones, weak electrostatic interactions favour diene approach from the more hindered face, leading to enantioselectivities of 70–95 % with a range of dienophiles.