C-[7-(2,4-difluoro-phenyl)-2,3-dihydro-benzofuran-2-yl]-methylamine 、
N,N-二异丙基乙胺 、
氯甲酸苄酯 、 (+/-)-Benzyl(7-cyclopentyl-2,3-dihydro-1-benzofuran-2-yl)methylcarbamate 以gave 2.14 g (81%) of (±)-benzyl{[7-(2,4-difluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}carbamate as a white solid的产率得到(+/-)-benzyl {[7-(2,4-difluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}carbamate