反应详情

Treatment of (±)-1-[4-(4-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine (1.94 g, 7.03 mmol) with diisopropylethylamine (1.36 g, 10.55 mmol) followed by benzyl chloroformate (1.32 g, 7.74 mmol) generally according to the procedure described for Intermediate 12 provided 2.36 g (90%) of (±)-benzyl {[4-(4-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}carbamate as a white solid. mp 134-136° C.; Anal. calcd. for C24H23NO3: C, 77.19; H, 6.21; N, 3.75. Found: C, 77.08; H, 6.3; N, 3.69.