ALPHA-HALOTETRAMETHYCYCLOHEXANONE, A METHOD FOR THE PREPARATION THEREOF, AND A METHOD FOR THE PREPARATION OF A (2,3,4,4-TETRAMETHYLCYCLOPENTYL)METHY CARBOXYLATE COMPOUND
申请人:SHIN-ETSU CHEMICAL CO., LTD.
公开号:US20170342013A1
公开(公告)日:2017-11-30
The present invention provides a method for the preparation of a sex pheromone of Obsucure Mealy bug (OMB), (plus/minus) (2,3,4,4-tetramethycyclopentyl)methyl acetate. The method comprises a step of subjecting alpha-halotetramethylcyclohexanone to a Favorskii rearrangement to obtain a 2,3,4,4-tetramethylcyclopentane compound (2), a step of subjecting said compound (2) to reduction to obtain (2,3,4,4-tetramethylcyclopentyl)methanol (3) and a step of subjection said compound (3) to acylation to obtain a (2,3,4,4-tetramethylcyclopentyl)methyl carboxylate compound (4).
本发明提供了一种制备模糊粉蚧性信息素(OMB)(加/减)(2,3,4,4-四甲基环戊基)乙酸甲酯的方法。该方法包括以下步骤:将α-卤代四甲基环己酮进行Favorskii重排反应,得到2,3,4,4-四甲基环戊烷化合物(2);将化合物(2)还原得到(2,3,4,4-四甲基环戊基)甲醇(3);将化合物(3)酰化得到(2,3,4,4-四甲基环戊基)甲基羧酸甲酯化合物(4)。