引言 高温液态水,通常是指温度在180~350℃之间的压缩液态水.它不仅自身具有酸催化与碱催化的功能,而且具有能同时溶解有机物与无机物的特性。近年来,作为一种环境友好介质,高温液态水在有机合成反应中的应用研究得到了关注,高温液态水中的有机合成反应已成为绿色有机合成的方法之一.
The kinetics of non catalyzed pinacol rearrangement in high temperature liquid water was investigated at 10 MPa and temperature from 180℃ to 220℃. Rate constants were evaluated with the firstorder reaction assumption. The activation energy evaluated was 176.4 kJ ·mol^-1. The experimental results demonstrate that non catalyzed pinacol rearrangement in high temperature liquid water is possible with high pinacol conversion and pinaeolone yield over 80%.