(1S,2R)-methyl 2-(4-chlorophenethyl)-1-hydroxy-3-methylenecyclohexanecarboxylate 在
三氟甲磺酸 作用下,
以
硝基甲烷 、
二氯甲烷 为溶剂,
反应 2.0h,
生成
(1S,4aS,10aR)-methyl 6-chloro-1-hydroxy-4a-methyl-1,2,3,4,4a,9,10,10a-octahydrophenanthrene-1-carboxylate 、 (1R,4aR,10aS)-methyl 6-chloro-1-hydroxy-4a-methyl-1,2,3,4,4a,9,10,10a-octahydrophenanthrene-1-carboxylate