申请人:SUMITOMO CHEMICAL COMPANY, LIMITED
公开号:US20170008853A1
公开(公告)日:2017-01-12
A method for producing a pyrazole compound represented by formula (1):
(wherein R
1
represents an optionally substituted C
1-12
alkyl group, an optionally substituted C
3-12
cycloalkyl group, an optionally substituted C
6-16
aryl group, or an optionally substituted pyridyl group, R
2
and R
3
each independently represent a hydrogen atom, a halogen atom, a C
1-3
alkyl group, or a C
1-3
haloalkyl group), said method including a step in which a pyrazolidine compound represented by formula (2):
(wherein R
1
, R
2
, and R
3
are as defined above)
is reacted with a nitrite in the presence of an acid,
allows a pyrazole compound to be produced industrially.
一种生产由化学式(1)表示的吡唑化合物的方法:(其中R1代表可选取代的C1-12烷基基团,可选取代的C3-12环烷基基团,可选取代的C6-16芳基基团或可选取代的吡啶基团,R2和R3各自独立地代表氢原子,卤原子,C1-3烷基基团或C1-3卤代烷基基团),所述方法包括一步骤,在该步骤中,由化学式(2)表示的吡唑烷化合物:(其中R1,R2和R3如上定义)在酸的存在下与亚硝酸盐反应,从而可以工业化生产吡唑化合物。