申请人:ALLEGRINI Pietro
公开号:US20070249662A1
公开(公告)日:2007-10-25
A process for preparation of a compound of formula (I), both as the isomeric mixture and individual isomers,
wherein Q is ═CR
8
— or ═N—; each R
1
, R
2
, R
3
, R
4
is independently selected from hydrogen, halogen, hydroxy; nitro; C
1
-C
6
alkyl optionally substituted with hydroxy; alkylthio C
1
-C
6
; C
1
-C
6
alkoxy optionally substituted with halogen or C
1
-C
6
alkoxy; phenyl-C
1
-C
6
alkyl; phenyl-C
1
-C
6
alkoxy; and —N(RaRb) wherein each Ra and Rb is independently hydrogen or C
1
-C
6
alkyl or Ra and Rb, taken together with the nitrogen atom they are linked to, form a saturated heterocyclic ring; and
each R
5
, R
6
, R
7
, R
8
is independently selected from hydrogen, halogen, hydroxy; C1-C6 alkyl optionally substituted with hydroxy; alkylthio C
1
-C
6
; C
1
-C
6
alkoxy optionally substituted with halogen; C
1
-C
6
alkyl-carbonyl, C
1
-C
6
alkoxy-carbonyl, and oxazol-2-yl; comprising converting a compound of formula (IV),
to said compound of formula (I), in the presence of a catalyst, if necessary in an organic solvent.
一种制备式(I)化合物的方法,包括其同分异构体混合物和单个异构体,其中Q为═CR8—或═N—;每个R1、R2、R3、R4独立选择自氢、卤素、羟基、硝基、C1-C6烷基(可选用羟基取代)、C1-C6烷基硫醇、C1-C6烷氧基(可选用卤素或C1-C6烷氧基取代)、苯基-C1-C6烷基、苯基-C1-C6烷氧基和—N(RaRb)(其中每个Ra和Rb独立选择自氢或C1-C6烷基,或Ra和Rb连同它们链接到的氮原子形成饱和杂环环);每个R5、R6、R7、R8独立选择自氢、卤素、羟基、C1-C6烷基(可选用羟基取代)、C1-C6烷基硫醇、C1-C6烷氧基(可选用卤素取代)、C1-C6烷基-羰基、C1-C6烷氧基-羰基和噁唑-2-基;包括在有机溶剂中,在催化剂的存在下,将式(IV)化合物转化为所述式(I)化合物,必要时使用催化剂。