Parts‐per‐Million‐Level, Catalytic [3+2]‐Annulations for the Asymmetric Synthesis of Methanobenzo[7]annulenes
作者:Guguloth Thirupathi、Etikala Ashok、A. Suresh Kumar、Dhevalapally B. Ramachary
DOI:10.1002/chem.202103254
日期:2021.12.23
Methanobenzo[7]annulenes. Parts-per-million catalyst loading for [3+2]-annulations. An unprecedented, ppm-level, catalytic asymmetric [3+2]-annulation of 3-alkyl-lawsones with nitroethylenes is reported. It is an efficient, sustainable, catalytic asymmetric annulation reaction for the synthesis of chiral methanobenzo[7]annulenes, which are part of many antibiotics.
甲烷苯并[7]环烯。[3+2]-环化的百万分之一催化剂负载。报道了一种前所未有的 ppm 级催化不对称 [3+2]-环化 3-烷基-劳森酮与硝基乙烯。它是一种有效、可持续、催化不对称环化反应,用于合成手性甲烷苯并 [7] 环烯,这是许多抗生素的一部分。