摘要:
Treatment of an equimolar mixture of trifluoromethylketones (TFMKs) and methylketones (MKs) with Et2Zn resulted in selective reduction of the TFMKs in good yield. In contrast, treatment of an equimolar mixture of TFMKs and MKs with NaBH4 in the presence of CeCl3 in EtOH/H2O (10:1) at -10degreesC reduced only the MKs. (C) 2005 Elsevier Ltd. All rights reserved.