2,3-二氢-5-甲基呋喃 、
N-(4-methoxybenzylidene)-2,3-dihydrobenzo[b][1,4]dioxin-6-amine 在
三氟化硼乙醚 作用下,
以
苯 为溶剂,
生成 cis-dl-2,3,7,8,8a,9,10,11a-Octahydro-8-(p-methoxyphenyl)-11a-methyl-p-dioxino-<2,3-f>furo<3,2-c>chinolin 、 trans-dl-2,3,7,8,8a,9,10,11a-Octahydro-8-(p-methoxyphenyl)-11a-methyl-p-dioxino-<2,3-f>furo<3,2-c>chinolin 、 cis-dl-2,3,3a,4,5,8,9,11b-Octahydro-4-(p-methoxyphenyl)-11b-methyl-p-dioxino<2,3-g>furo<3,2-c>chinolin 、 trans-dl-2,3,3a,4,5,8,9,11b-Octahydro-4-(p-methoxyphenyl)-11b-methyl-p-dioxino-<2,3-g>furo<3,2-c>chinolin