(E)-ethyl 5-(2-hydroxy-6-methoxynaphthalen-1-yl)pent-2-enoate 、
乙基溴化镁 在
copper(l) iodide 、 (R)-2,2'-bis(diphenylphosphanyl)-1,1'-binaphthyl 、 copper(II) 2-ethylhexanoate 作用下,
以
乙醚 、
二氯甲烷 为溶剂,
反应 12.0h,
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