反应详情

Compound h, 2.9 g, and 4.2 g of 5-methoxybenzimidazole were treated in a manner similar to Example 23 to give a 1:1 mixture of Compounds E-61a and E-62a. The mixture was separated and purified by silica gel column chromatography (eluting solvent, hexane:ethyl acetate:triethylamine=10:10:1) to give 0.8 g of methyl (E)-11-[2-(5-methoxy-1-benzimidazolyl)ethylidene]-6,11-dihydrodibenz[b,e]oxepin-2-carboxylate (Compound E-61a), 0.5 g of methyl (E)-11-[2-(6-methoxy-1-benzimidazolyl)ethylidene]-6,11-dihydrodibenz[b,e]oxepin-2-carboxylate (Compound E-62a) and 2.3g of the mixture of Compounds E-61a and E-62a.

1. customto give
2. additiona 1:1 mixture of Compounds E-61a and E-62a
3. customThe mixture was separated
4. custompurified by silica gel column chromatography (eluting solvent, hexane:ethyl acetate:triethylamine=10:10:1)