Prenyl and geranyl phenyl sulfone, a new carbon nucleophile for Mitsunobu-type alkylation
摘要:
Cyanomethylenetrimethylphosphorane (CMMP), a new Mitsunobu reagent developed recently by the authors, mediated the alkylation of prenyl and geranyl phenyl sulfone with primary and secondary alcohols quite efficiently. Utilizing geranyl phenyl sulfone, norfaranal, an analog of the unique trail pheromone produced by Pharaoh's ant, was synthesized in a short number of steps. (C) 2001 Elsevier Science Ltd. All rights reserved.
According to “integrated chemical process”, a novel one-pot process for construction of highly substituted allylic moieties has been achieved. A series of alkylation of allylic sulfones and palladium-catalyzed reductive desulfonylation by use of LiBHEt3 is integrated. The double alkylation furnishes more substituted olefins. Use of arylzinc compounds in place of the hydride enables electrophilic a