ChemInform Abstract: Phosphine-Catalyzed Annulations of Azomethine Imines: Allene-Dependent [3 + 2], [3 + 3], [4 + 3], and [3 + 2 + 3] Pathways.
阅读量：
24
摘要：
Under very mild reaction conditions, the title annulation reactions of oxopyrazolidine-derived azomethine imines (I) or (VII) with allenoates afford a broad range of pyrazolo-fused pyrazolones, pyridazinones, diazepinones, and diazocinones.
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关键词：
cycloaddition reactions pyrazole derivatives pyridazine derivatives multi-membered N-heterocycles
DOI：
10.1002/chin.201203024
年份：
2012
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