申请人:Yamashita Ayako
公开号:US20060183924A1
公开(公告)日:2006-08-17
The present invention relates to methods for the preparation of 3,3-dialky 4-chromanones, and particularly to the preparation of 6-fluoro-3,3-dimethyl-2,3-dihydro-4H-chromen-4-one and 3,3-dimethyl-2,3-dihydro-4H-chromen-4-one. In some embodiments, the processes include reaction of a 4-chromanone compound with an alkyl halide in the presence of a metal alkoxide at low temperature.
本发明涉及制备3,3-二烷基-4-香豆酮的方法,特别是制备6-氟-3,3-二甲基-2,3-二氢-4H-香豆酮和3,3-二甲基-2,3-二氢-4H-香豆酮的方法。在某些实施例中,该过程包括在低温下将4-香豆酮化合物与烷基卤化物在金属烷氧化物存在下反应。