AbstractThe reductions of propiophenone and octanophenone to 1‐phenylpropan‐1‐ol and 1‐phenyloctan‐1‐ol, respectively, with sodium borohydride and tetrabutylammonium borohydride were performed on a reverse‐phase highperformance liquid chromatographic (HPLC) column of macroporous 10‐μm poly(styrene–divinylbenzene) undr HLPC conditions. In these reactions a lower concentration of tetrabutylammonium borohydride than of sodium borohydride was needed to effect the same extent of reduction, and modest substrate select