N-(3-cyclohexenylcarbonyl)piperazine 、
2-氯-4-氨基-6,7-二甲氧基喹唑啉 在
crude product 、
甲醇 作用下,
以affords analytically pure 4-amino-2-[4-(3-cyclohexenylcarbonyl)-1-piperazinyl]-6,7-dimethoxyquinazoline, m.p. 211°-213° C. resolidifying and melting at 234.0° -236.0°C. (corr.)的产率得到4-Amino-2-[4-(3-cyclohexenylcarbonyl)-1-piperazinyl]-6,7-dimethoxyquinazoline