The production process of the present invention comprises a step of allowing a carboxylic acid derivative represented by the formula (1):
wherein ring Z is a monocyclic or polycyclic non-aromatic or aromatic ring, and R1 is a halogen atom or a group represented by the formula (2):
-OR (2)
wherein R is a hydrogen atom or a hydrocarbon group, to react with an organometallic compound represented by the formula (3) :
R2-M (3)
wherein R2 is a hydrocarbon group, and M is a metallic atom which may have a ligand, or the formula (4):
-MgY (4)
wherein Y is a halogen atom,
and a carboxylic acid halide represented by the formula (5):
wherein R3 is a hydrocarbon group or a heterocyclic group, and X is a halogen atom, to yield the tertiary alcohol ester represented by the formula (6):
wherein Z, R2 and R3 have the same meanings as defined above..
According to the present invention, a tertiary alcohol compound having a tertiary carbon combined with a ring group can be easily and efficiently produced from carboxylic acid derivative which is comparatively cheap and readily available.
本发明的生产工艺包括以下步骤:允许使用由式(1)代表的
羧酸衍
生物:
其中环 Z 是单环或多环的非芳香族或芳香族环,R1 是卤素原子或由式(2)代表的基团:
-OR(2)
其中 R 是氢原子或烃基,与式 (3) 所代表的有机
金属化合物反应:
R2-M (3)
其中 R2 是烃基,M 是
金属原子,可带有配位体,或式(4):
-MgY (4)
其中 Y 是卤素原子、
和式 (5) 所代表的
羧酸卤化物:
其中 R3 是烃基或杂环基,X 是卤素原子,得到式(6)代表的叔醇酯:
其中 Z、R2 和 R3 的含义与上述定义相同。
根据本发明,可以从相对便宜且容易获得的
羧酸衍
生物中轻松高效地生产出具有叔碳结合环基的叔醇化合物。