反应详情

Following General Procedure H, a solution of 6-bromo-4-ethyl-7-ethoxy-2,2-dimethyl-2H-chromene (Compound 16, 595 mg, 2.08 mmol) in THF was treated with tributyl(1-ethoxyvinyl)tin (1.50 g, 4.17 mmol) to give the title compound as a yellow solid.