A reaction of 3-(α-chlorobenzyl)quinoxalin-2(1 H)-one with α-picoline gives 2-(3-phenyl-indolizin-2-yl)benzimidazole as a result of a ring-contracting rearrangement involving the fragment C(2)—C(3)—C(Cl)Ph of the quinoxaline system and the fragment N=CH—Me of the α-picoline system. Possible pathways of this reaction are discussed.
3-(α-chlorobenzyl)quinoxalin-2(1 H)-one 与 α-picoline 反应生成 2-(3-phenyl-indolizin-2-yl)benzimidazole 作为涉及片段的缩环重排的结果
喹喔啉系统的 C(2)-C(3)-C(Cl)Ph 和 α-
甲基吡啶系统的片段 N=CH-Me。讨论了该反应的可能途径。