反应详情

To trans-1,2-dimethylcyclohexene-4,5-dicarboxylic acid (1.98 g, 0.0 mol) heated to 80° C., was added thionyl chloride (2.38 g, 0.02 mol) over 1 hr. The mixture was kept at this temperature for a further two hours, then cooled and added dropwise to a diethyl ether solution (45 ml) of excess diethylamine (14.6 g, 0.2 mol) cooled to ice bath temperature.

1. temperaturecooled
2. temperaturecooled to ice bath temperature