反应详情

Using the same procedure as for the synthesis of 2,2,4,4,8-pentamethyl-6-chromanoic acid (Compound A1) but using 5,6,7,8-tetrahydro-5,5,8,8-tetramethyl-3-methoxymethoxy-2-bromonaphthalene (Compound J, 722 mg, 2.21 mmol) and 2.86 ml of t-BuLi (4.87 mmol, 1.7M solution in hexane), the title compound was obtained as a white solid (143 mg).