ethyl 3-(4-isopropylphenyl)-1-tosyl-2-(3, 4, 5-trimethoxybenzoyl)aziridine-2-carboxylate 在
ytterbium(III) triflate 作用下,
以
二氯甲烷 为溶剂,
反应 15.0h,
以71%的产率得到ethyl 4-hydroxy-1-(4-isopropylphenyl)-6,7,8-trimethoxy-2-tosyl-1,2-dihydroisoquinoline-3-carboxylate