作者:V. A. Chuiko、Zh. V. Vinarskaya、L. V. Izotova、L. Yu. Tychinskaya
DOI:10.1023/a:1015505414760
日期:——
Optically active benzylidene derivatives of camphor and menthone were obtained in preparative yields by condensation of the ketones with aromatic aldehydes in DMSO in the presence of t-BuOLi. The synthesized alpha, beta-unsaturated ketones show high specific rotation and thus are suitable to bedoping component to liquid-crystalline compositions.
Simple and Effective Protocol for Claisen-Schmidt Condensation of Hindered Cyclic Ketones with Aromatic Aldehydes
A simple and effective methodology for Claisen-Schmidtcondensation of (-)-menthone and other hindered cyclic ketones with aromaticaldehydes under highly basic conditions using a polar aprotic solvent and a strong base (alkali metal hydroxide or an alkoxide) is described and discussed.