(1R)-1-(4-ethoxyphenyl)-2-methoxyethanamine hydrochloride 、 cis-5-fluoro-2H-spiro[1-benzofuran-3,1'-cyclopropane]-2'-carboxylic acid 在
N,N-二异丙基乙胺 、 N-[(dimethylamino)-3-oxo-1H-1,2,3-triazolo[4,5-b]pyridin-1-yl-methylene]-N-methylmethanaminium hexafluorophosphate 作用下,
以
二氯甲烷 为溶剂,
生成 cis-5-fluoro-N-[(1R)-1-(4-ethoxyphenyl)-2-methoxyethyl]-2H-spiro[1-benzofuran-3,1'-cyclopropane]-2-carboxamide