| 摘要 |
1490077 Imidazoline derivative SANDOZ Ltd 17 Oct 1974 [19 Oct 1973] 45025/74 Heading C2C [Also in Divisions C3 D1-D2 and B1-B2] The compound of Formula IV in which n is 1, Y is -CO-NH-, X is a group of formula and the benzene rings are attached at their ppositions is prepared by reacting terephthalic acid dimethyl ester with diethylene triamine in a molar ratio of ester to amine of 1 : 8À5 or 1 : 10 with cyclization by heating. [Examples 1 and 2]. |
