(7R*,8S*)-7-hydroxy-4,6,6-trimethyl-8-[(2-phenylethyl)amino]-4,6,7,8-tetrahydro-1,5-dioxa-4-aza-anthracene-3-one 、
ethene - hydrogen chloride 1:1 complex 以
乙醚 为溶剂,
反应 0.17h,
以the aimed product was obtained (yield: 93%)的产率得到(7R*,8S*)-7-hydroxy-4,6,6-trimethyl-8-[(2-phanylethyl)amino]-4,6,7,8-tetrahydro-1,5-dioxa-4-aza-anthracene-3-one hydrochloride