申请人:SUMITOMO CHEMICAL COMPANY, LIMITED
公开号:EP0789020A1
公开(公告)日:1997-08-13
A process for producing a dioxoquinazoline of formula (II) :
wherein R1 and R2 independently represent a hydrogen atom, a halogen atom, a nitro group, a lower alkyl group which is optionally substituted by one or more halogen atoms, an aralkyl group which is optionally substituted by one or more halogen atoms, an alkoxy group which is optionally substituted by one or more halogen atoms, an alkoxycarbonyl group which is optionally substituted by one or more halogen atoms or a group represented by YNR3R4, wherein Y represents a direct bond, a lower alkylene group or a carbonyl group, and R3 and R4 independently represent a lower alkyl group, or N, R3 and R4 together form a five- or six-membered heterocycle which optionally contains a further hetero atom, said heterocycle being optionally substituted, and X represents a hydrogen atom, a lower alkyl group which is optionally substituted by one or more halogen atoms, an aralkyl group which is optionally substituted by one or more halogen atoms or a group represented by ZCO2R5, wherein Z represents a lower alkylene group and R5 represents a lower alkyl group or an aralkyl group,
which comprises reacting an anthranylamide of formula (I):
wherein X, R1 and R2 are as defined above,
with the reaction product of a pyridine compound and phosgene.
一种生产式(II)的二噁喹唑啉的工艺:
其中 R1 和 R2 独立地代表氢原子、卤素原子、硝基、任选被一个或多个卤素原子取代的低级烷基、任选被一个或多个卤素原子取代的芳烷基、任选被一个或多个卤素原子取代的烷氧基、任选被一个或多个卤素原子取代的烷氧羰基或 YNR3R4 所代表的基团,其中 Y 代表直接键、低级亚烷基或羰基、X 代表氢原子、可被一个或多个卤素原子取代的低级烷基、可被一个或多个卤素原子取代的芳烷基或由 ZCO2R5 表示的基团,其中 Z 代表低级亚烷基,R5 代表低级烷基或芳烷基、
其中 Z 代表低级亚烷基,R5 代表低级烷基或芳烷基:
其中 X、R1 和 R2 如上定义、
与吡啶化合物和光气的反应产物反应。