The production process of the present invention comprises a step of allowing a carboxylic acid derivative represented by the formula (1):
1
wherein ring Z is a monocyclic or polycyclic non-aromatic or aromatic ring, and R
1
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):
R
2
—M (3)
wherein R
2
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):
2
wherein R
3
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):
3
wherein Z, R
2
and R
3
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.
本发明的生产过程包括允许由式(1)表示的
羧酸衍
生物进行反应的步骤:
其中环Z是单环或多环非芳香或芳香环,R1是卤素原子或由式(2)表示的基团:
其中R是氢原子或碳氢基团,与由式(3)表示的有机
金属化合物发生反应:
其中R2是碳氢基团,M是可能具有
配体的
金属原子,或由式(4)表示的:
其中Y是卤素原子,以及由式(5)表示的
羧酸卤化物:
其中R3是碳氢基团或杂环基团,X是卤素原子,得到由式(6)表示的
三级醇酯:
其中Z、R2和R3具有上述定义的相同含义。根据本发明,可以从相对便宜且易于获得的
羧酸衍
生物中轻松高效地生产具有三级碳与环基结合的
三级醇化合物。