1,3-dihydro-1-methoxy-2,2-dioxide benzo[c]thiophene 、
6,8-dibromo-4a-(3-methylbutyl)-1,4-benzodioxine-3,7-dione 在
zinc(II) oxide 作用下,
以
甲苯 为溶剂,
以80%的产率得到(6aR,7R,12aR,12bS)-5,6a-dibromo-7,11-dimethoxy-12b-(3-methylbutyl)-12,12a-dihydro-7H-naphtho[2,3-f][1,4]benzodioxine-2,6-dione