The effect of reaction time on yield is illustrated in the case of carbethoxymethyl acetate: 8 hours, 3% yield; 26 hours (with KaI cat.), 69% yield; 48 hours, 44% yield; and for carbethoxymethyl valerate: 1 hour, 14% yield; 24 hours, 82% vield; 48 hours, 55% yield. In this latter 48 hour run, 36.4 g. of a fraction boiling from 114-167'(2 mm.) was obtained.? he nature of this higher-boiling fraction was not investigated further as no similar product was ...
