PROCESSES FOR PREPARING A 2-(1,2,2-TRIMETHYL-3-CYCLOPENTENYL)-2-OXOETHYL CARBOXYLATE COMPOUND AND HYDROXYMETHYL 1,2,2-TRIMETHYL-3-CYCLOPENTENYL KETONE, AND A HALOMETHYL (1,2,2-TRIMETHYL-3-CYCLOPENTENYL) KETONE COMPOUND
申请人:Shin-Etsu Chemical Co., Ltd.
公开号:EP3808727A1
公开(公告)日:2021-04-21
A process for preparing a 2-(1,2,2-trimethyl-3-cyclopentenyl)-2-oxoethyl carboxylate compound of the following general formula (6), wherein R represents a monovalent hydrocarbon group having 1 to 9 carbon atoms, the process comprising esterifying a 2-(1,2,2-trimethyl-3-cyclopentenyl)-2-oxoethyl compound of the following general formula (5), wherein X represents a hydroxyl group or a halogen atom, to form the 2-(1,2,2-trimethyl-3-cyclopentenyl)-2-oxoethyl carboxylate compound (6).
一种制备下通式(6)的 2-(1,2,2-三甲基-3-环戊烯基)-2-氧代乙基羧酸酯化合物的工艺,其中 R 代表具有 1 至 9 个碳原子的一价烃基,该工艺包括将下通式(5)的 2-(1、2,2-三甲基-3-环戊烯基)-2-氧代乙基化合物,其中 X 代表羟基或卤原子,形成 2-(1,2,2-三甲基-3-环戊烯基)-2-氧代乙基羧酸酯化合物(6)。