methyl 6-(cyclopentylmethylene)-5-oxo-5,6,7,8-tetrahydronaphthalene-2-carboxylate 、 2-chloro-4-hydrazinobenzonitrile hydrochloride 在
乙醇 、 methyl 2-(3-chloro-4-cyanophenyl)-3-cyclopentyl-3,3a,4,5-tetrahydro-2H-benzo[g]indazole-7-carboxylate 作用下,
以
乙醇 为溶剂,
反应 8.0h,
以to provide the title compound largely present as (±)-(3SR,3aRS)-methyl 2-(3-chloro-4-cyanophenyl)-3-cyclopentyl-3,3a,4,5-tetrahydro-2H-benzo[g]indazole-7-carboxylate (3.75 g, 87% yield)的产率得到methyl 2-(3-chloro-4-cyanophenyl)-3-cyclopentyl-3,3a,4,5-tetrahydro-2H-benzo[g]indazole-7-carboxylate