An efficient and practical one-potsynthesis of 3-substituted isoindolin-1-ones and isobenzofuran-1(3H)-ones has been developed under solvent free-conditions using non-toxic and cheap phenylboronic acid as excellent catalyst. This strategy involves the sequential two-step Mannich/lactamization cascade reaction of inexpensive 2-formylbenzoic acid with primary amines and a wide variety of ketones, and
Rhodium-catalysed tandem dehydrogenative coupling–Michael addition: direct synthesis of phthalides from benzoic acids and alkenes
作者:Andrea Renzetti、Hiroshi Nakazawa、Chao-Jun Li
DOI:10.1039/c6ra07671h
日期:——
[(COD)RhCl]2 catalyses the coupling of benzoicacids and alkenes in the presence of Cu(OAc)2·H2O and dicyclopentadiene to afford phthalides in 15–93% yield. A 3-substituted or 3,7-disubstituted product is obtained selectively depending on alkene type. The reaction is highly atom-economical and uses readily available starting materials.