SYNTHESIS OF PHENYLSELANYLISOCHROMAN-1-ONES THROUGH HIGHLY SELECTIVE SELENOLACTONIZATION OF STYRENE-TYPED CARBOXYLIC ACIDS

摘要

The novel synthesis of phenylselanylisochroman-1-ones was achieved by selenolactonization of styrene-typed carboxylic acids and phenylselenenyl chloride in the presence of 1,4-diazabicyclo[2.2.2]octane (DABCO). The reactions give excellent yields with high exo-selectivity.