3-[5-Acetylamino-2,4,6,7-tetramethyl-2,3-dihydrobenzofuran-2-yl]acrylic acid ethyl ester 、
盐酸 在
Diisopropyl ether ethanol 作用下,
以
甲醇 为溶剂,
反应 1.0h,
以to obtain the desired compound (0.35 g, yield: 74.7% yield), m.p. 225°-234° C. (dec.)的产率得到Methyl 3-[5-amino-2,4,6,7-tetramethyl-2,3-dihydrobenzofuran-2-yl]acrylate hydrochloride