A Combined Vinylogous Mannich/Diels-Alder Approach for the Stereoselective Synthesis of Highly Functionalized Hexahydroindoles
作者:Bettina M. Ruff、Sabilla Zhong、Martin Nieger、Marcel Sickert、Christoph Schneider、Stefan Bräse
DOI:10.1002/ejoc.201100996
日期:2011.11
derivatives is reported. The molecules synthesized are highly functionalized and bear up to six stereogenic centers. We were able to develop a stereoselective route starting from nonchiral commercially available materials. Key steps in the formation of the bicyclic products are an organocatalytic vinylogous Mukaiyama–Mannich and a Diels–Alder reaction. The former uses a 1,1′-bi-2-napthol (BINOL)-based