TiCl4-promoted tandem carbonyl or imine addition and Friedel-Crafts cyclization: synthesis of benzo-fused oxabicyclooctanes and nonanes.

ABSTRACT: A new and convenient synthesis of benzo-fused 8-oxabicyclo[3.2.1]octane and 9-oxabicyclo[4.2.1]nonane derivatives are described. The reaction involved a TiCl(4)-mediated tandem carbonyl or imine addition followed by a Friedel-Crafts cyclization to provide these functionalized derivatives in good to excellent yields and high diastereoselectivity.

SUBMITTER: Ghosh AK 

PROVIDER: S-EPMC3331910 | biostudies-literature | 2012 Apr

REPOSITORIES: biostudies-literature