1-Methyl-2-imino-pyrrolidin 、
4-溴异氰酸苯酯 在
1-(4-bromo-phenyl)-3-(1-methyl-pyrrolidin-2-ylidene)-urea 、 isopropanol-ether 作用下,
以
苯 为溶剂,
反应 16.0h,
以A second crop (m.p. = 134°-136° C) is also obtained from the mother liquor的产率得到1-(4-bromo-phenyl)-3-(1-methyl-pyrrolidin-2-ylidene)-urea