申请人:Yamamoto Akihiro
公开号:US20120302757A1
公开(公告)日:2012-11-29
An object of the present invention is to provide a method for producing an oxazole compound in a high yield.
The object can be achieved by a compound represented by Formula (11):
wherein R
1
is a hydrogen atom or lower-alkyl group;
R
2
is a 1-piperidyl group substituted at the 4-position with a substituent selected from
(A1a) a phenoxy group substituted on the phenyl moiety with one or more halogen-substituted lower-alkoxy groups,
(A1b) a phenoxy-substituted lower-alkyl group substituted on the phenyl moiety with one or more halogen-substituted lower-alkyl groups,
(A1c) a phenyl-substituted lower-alkoxy lower-alkyl group substituted on the phenyl moiety with halogen,
(A1d) a phenyl-substituted lower-alkyl group substituted on the phenyl moiety with one or more halogen-substituted lower-alkoxy groups,
(A1e) an amino group substituted with a phenyl group substituted with one or more halogen-substituted lower-alkoxy groups, and a lower-alkyl group, and
(A1f) a phenyl-substituted lower-alkoxy group substituted on the phenyl moiety with one or more halogen-substituted lower-alkoxy groups;
n is an integer from 1 to 6; and
X
3
is an organic sulfonyloxy group.
本发明的目的是提供一种高产率制备噁唑化合物的方法。该目的可以通过式(11)表示的化合物实现:其中R1是氢原子或低烷基基团;R2是在4-位被取代的1-哌啶基团,所述取代基被选择自(A1a)在苯基上取代一个或多个卤素取代低烷氧基的苯氧基,(A1b)在苯基上取代一个或多个卤素取代低烷基的苯氧基取代低烷基基团,(A1c)在苯基上取代卤素的苯基取代低烷氧基低烷基基团,(A1d)在苯基上取代一个或多个卤素取代低烷氧基的苯基取代低烷基基团,(A1e)取代有苯基的氨基取代一个或多个卤素取代低烷氧基的苯基和低烷基基团,以及(A1f)在苯基上取代一个或多个卤素取代低烷氧基的苯基取代低烷氧基基团;n是1到6的整数;X3是有机磺酰氧基团。