反应详情

2-Methoxybutadiene (69.9 g), 2-cyclopentenone (68.22 g) and hydroquinone (0.2 g) were heated together at 190° C. for 2 hours. The product was then distilled in vacuo, to give 3-methoxybicyclo[4,3,0]non-3-en-7-one (30 g), b.p. 74°-92° C./1.5 mmHg.

1. distillationThe product was then distilled in vacuo