The reaction of the bicyclic polyfunctional electrophilic system – 1-ethoxy-5-methyl-3,8-diphenyl-1-pyrano[3,4-]pyran-7-ium perchlorate with heterocyclic and aromatic acid hydrazides leads to the corresponding N-aminopyridinium ylides . The reaction conditions have been optimized and a mechanism for the formation of the ylides has been proposed.

中文翻译：

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来自吡喃[3,4-c]吡喃-7-盐的氨基吡啶叶立德：合成和结构

双环多官能团亲电子体系 - 1-乙氧基-5-甲基-3,8-二苯基-1-吡喃并[3,4-]吡喃-7-鎓高氯酸盐与杂环和芳香酰肼的反应产生相应的N-氨基吡啶叶立德。优化了反应条件并提出了叶立德的形成机理。