申请人:Sumitomo Chemical Company, Limited
公开号:EP2014647A1
公开(公告)日:2009-01-14
1. A method of producing lactams of the following formula (1) comprising the following three steps A to C:
[when R3 and R4 are both a hydrogen atom, R represents a substituted methylene group or an optionally substituted polymethylene group, when at least one of R3 and R4 is a substituent other than a hydrogen atom, R represents an optionally substituted methylene group or an optionally substituted polymethylene group, R3, R4, R5 and R6 represent each independently a hydrogen atom, halogen atom, cyano group, optionally substituted alkyl group, optionally substituted alkenyl group, optionally substituted aryl group, optionally substituted amino group, -ORa group, -SRb group or - COORc group.]
(Step A)
a step of reacting lactones of the following formula (2):
and imides of any of the following formulae (3a), (3b) and (3c):
[A1, A2, A3, A4, A5, A6, A7, A8, A9 and A10 represent each independently a hydrogen atom, halogen atom, nitro group, alkyl group, alkenyl group, optionally substituted aryl group, optionally substituted acyl group or -ORd.] to produce the correspondent carboxylic acids,
(Step B)
a step of esterifying the carboxylic acids to produce the correspondent esters,
(Step C)
a step of reacting the esters and amines to produce lactams of the formula (1).
1.一种生产下式(1)内酰胺的方法,包括以下三个步骤 A 至 C:
[当 R3 和 R4 都是氢原子时,R 代表取代的亚甲基或任选取代的聚亚甲基;当 R3 和 R4 中至少有一个是氢原子以外的取代基时,R 代表任选取代的亚甲基或任选取代的聚亚甲基;R3、R4、R5 和 R6 各自独立地代表氢原子、卤素原子、氰基、任选取代的烷基、任选取代的烯基、任选取代的芳基、任选取代的氨基、-ORa 基、-SRb 基或-COORc 基]。
(步骤 A)
使下式(2)的内酯反应的步骤:
和下式(3a)、(3b)和(3c)中任一式的酰亚胺:
[A1、A2、A3、A4、A5、A6、A7、A8、A9 和 A10 各自独立地代表氢原子、卤素原子、硝基、烷基、烯基、任选取代的芳基、任选取代的酰基或-ORd.],生成相应的羧酸、
(步骤 B)
将羧酸酯化,生成相应的酯、
(步骤 C)
使酯和胺反应生成式(1)的内酰胺。