stereogenic centers was developed. A chiral BINOL‐based N‐triflylphosphoramide proved to be an effective catalyst for the in situ generation of ortho‐quinone methides (o‐QMs) and their subsequent cycloaddition reaction with unactivated alkenes provided chromanes with excellent diastereo‐ and enantioselectivity.
开发了一种高效的方法,用于对映体具有多个立体异构中心的手性苯并二氢
吡喃类化合物的高对映选择性合成。手性BINOL的N-三
氟磷酰胺被证明是原位生成邻苯醌甲基化物(o-QMs)的有效催化剂,随后它们与未活化的烯烃的环加成反应为苯并
吡喃提供了极佳的非对映异构和对映选择性。