مشخصات پژوهش

صفحه نخست /Synthesis of pyranopyrazole ...
عنوان
Synthesis of pyranopyrazole derivatives by in situ generation of trityl carbocation under mild and neutral media
نوع پژوهش مقاله چاپ‌شده
کلیدواژه‌ها
Pyranopyrazole  Ph3CCl  Tandem  Solvent-free  Neutral media
چکیده
In this work, synthesis of pyranopyrazole derivatives by the one-pot tandem four component condensation reaction of aryl aldehydes with ethyl acetoacetate, malononitrile, and hydrazine hydrate in the presence of Ph3CCl at 60 C under neutral, mild, and solvent-free conditions has been reported. Mechanistically, it is interesting that trityl chloride by in situ generation of trityl carbocation (Ph3C?) promotes the reaction.
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