反应详情

By the manner of Example 45, 4-benzoyloxy-2,3-dimethylphenol was reacted with 2-methoxybutadiene to give (±)-6-benzoyloxy-2-methoxy-2,7,8-trimethylchroman as a white powder, m.p. 101.5°-102.5°, from ether-30°-60° petroleum ether.