8-methoxy-2,3-dihydro-1H-benzo[f]chromen-3-ol 在
copper(l) iodide 、 (R)-2,2'-bis(diphenylphosphanyl)-1,1'-binaphthyl 作用下,
以
乙醚 、
二氯甲烷 、
苯 为溶剂,
反应 24.0h,
生成 (1S,2S,3R)-ethyl 3-ethyl-6'-methoxy-2'-oxo-2'H-spiro[cyclopentane-1,1'-naphthalene]-2-carboxylate 、
(1R,2R,3S)-ethyl 3-ethyl-6'-methoxy-2'-oxo-2'H-spiro[cyclopentane-1,1'-naphthalene]-2-carboxylate