反应详情

A procedure similar to that described in Example 2 was repeated, except that 4.3 g of 2-amino-1-(3-chlorophenyl)ethanol (prepared as described in Preparation 8), 3.5 g of methyl 3-[4-(2-oxopropoxy)phenyl]propionate (prepared as described in Preparation 5), 150 ml of benzene, 150 ml of absolute methanol and 6.12 g of sodium borohydride were used. A crude product was obtained, and this was purified by column chromatography through silica gel, using a 10:1 by volume mixture of ethyl acetate and ethanol as the eluent, to give 2.9 g of the title compound having an Rf=0.40 (thin layer chromatography over silica gel, using a 10:1 by volume mixture of ethyl acetate and ethanol as the developing solvent).

1. customA crude product was obtained
2. customthis was purified by column chromatography through silica gel
3. additionby volume mixture of ethyl acetate and ethanol as the eluent