反应详情

The 4-methyl-5-phenyl-2-thiophenecarboxylic acid (127 g, 0.58 mol) prepared as described above was heated to 220–230° C. until the evolution of carbon dioxide ceased. The product was collected and distilled, b.p. 120° C./10 torr. Yield 30.3 g (30%).

1. customThe product was collected
2. distillationdistilled