4,5,6,7-Tetrahydrobenzo[b]thien-4-ylisocyanate 、
二甲胺 在
acetone-hexane-ether 作用下,
以
乙醚 为溶剂,
反应 0.5h,
以to give 1,1-dimethyl-3-(4,5,6,7-tetrahydrobenzo[b]thien-4-yl)urea melting at 117° C. to 120° C.的产率得到1,1-dimethyl-3-(4,5,6,7-tetrahydrobenzo[b]thien-4-yl)urea