反応 #215948

反応方程式

2,3-dimethylbutadiene

dimethyl acetylenedicarboxylate

→

title compound

収率 78.0%

Dimethyl 4,5-dimethylcyclohexa-1,4-diene-1,2-dicarboxylate

収率 78.0%

溶媒

water

反応条件

後処理

1. 1
   ろ過filtered
2. 2
   その他The filtered solid was recrystallised from diethyl ether

実験手順

2,3-dimethylbutadiene (9.84 g, 0.12 mol) and dimethyl acetylenedicarboxylate (14.29, 0.1 mol) were stirred together in water (50 ml) at 60° C. for 24 hours. The emulsion was cooled to room temperature and filtered. The filtered solid was recrystallised from diethyl ether to give the title compound In 78% yield. N.m.r: δH (90 MHz, CDCl3) 3.70 (s,6H), 1.71 ppm (s,6H)

出典