OALib Journal期刊
ISSN: 2333-9721
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SilicaSulfuricAcid:AnEfficientHeterogeneousCatalystfortheOne-PotSynthesisof1,4-DihydropyridinesunderMildandSolvent-FreeConditions
DOI: 10.1016/S1872-2067(10)60252-5, PP. 1180-1184
Keywords: aldehyde,ethylacetoacetate,ammoniumacetate,silicasulfuricacid,1,4-dihydropyridine
Abstract:
?Aseriesof1,4-dihydropyridineshavebeenpreparedbyaone-potcondensationofaldehydes,ethylacetoacetate,andammoniumacetateinthepresenceofaheterogeneouscatalystsilicasulfuricacidatroomtemperatureundersolvent-freecondition.Thisnewprotocolhastheadvantageofshortreactiontimeandexcellentyields,andisanenvironmentallybenignroutetothesynthesisof1,4-dihydropyridines.
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