Rhodium-Catalyzed Enantioselective Addition to Unsymmetrical α-Diketones: Tandem One-Pot Synthesis of Optically Active 3-Tetrasubstituted Isochroman Derivatives
作者:Ting-Shun Zhu、Jian-Ping Chen、Ming-Hua Xu
DOI:10.1002/chem.201203701
日期:2013.1.14
The domino effect: An efficient and general catalytic one‐pot synthesis of quaternary‐substituted isochroman derivatives has been developed (see scheme). The cascade transformation relies on rhodium‐catalyzedhighly regio‐ and enantioselective 1,2‐addition of arylboronic acids to unsymmetrical α‐diketones and intramolecular etherification or esterification, and provides a variety of enantioenriched
Synthesis and reactions of tetracarbonylmanganese complexes of benzoylsilanes
作者:Richard C. Cambie、Linda Chua Mui Mui、Peter S. Rutledge、Paul D. Woodgate
DOI:10.1016/0022-328x(94)87271-6
日期:1994.1
Reactions of benzoylsilane with benzylpentacarbonylmanganese (1) give ortho-eta(2)-manganese complexes in high yield. The derived aldehyde complex can then be formed by fluoride-catalysed desilylation of the acylsilane complex. Coupling reactions of the acylsilane complexes with alkenes or alkynes are reported.