1-(5-tert-butylisoxazol-3-yl)-3-[3-(7,8-dihydro[1,4]dioxino[2,3-g]quinazolin-4-ylthio)phenyl]urea 、 hydrochloric acid diethyl ether 以
二氯甲烷 、
甲醇 为溶剂,
以to afford 1-(5-tert-butylisoxazol-3-yl)-3-[3-(7,8-dihydro-[1,4]dioxino[2,3-g]quinazolin-4-ylthio)phenyl]urea hydrochloride as solid (0.113 g, 61%)的产率得到l-(5-tert-butylisoxazol-3-yl)-3-[3-(7,8-dihydro-[1,4]dioxino[2,3-g]quinazolin-4-ylthio)phenyl]urea hydrochloride