CYCLIZATION OF 1-ARYL-5-PHENYLPENT-4-EN-2-YN-1-ONES TO 2,3-DIHYDROPYRAN-2-ONES IN TRIFLUOROMETHANESULFONIC ACID
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DOI: 10.1007/5838
Abstract: 1-Арил-5-фенилпент-4-ен-2-ин-1-оны под действием избытка трифторметансульфоновой кислоты при комнатной температуре за 1 ч внутримолекулярно циклизуются в 6-арил-2-фенил-2,3-дигидропиран-4-оны с выходами 50–60%. read more here.
Keywords: cyclization aryl; ones dihydropyran; phenylpent ones; aryl phenylpent ... See more keywords
Catalyst-Free Regioselective Nazarov Cyclization of Aryl Allenyl Ketones
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DOI: 10.1055/s-0036-1591487
Abstract: The catalyst-free Nazarov cyclization of aryl allenyl ketones under thermal condition is developed. Various densely functionalized 2,3-dihydroindanones or indenones are readily produced in moderate to excellent yields. Significantly, this procedure features high functional group tolerance… read more here.
Keywords: cyclization aryl; nazarov cyclization; catalyst free; allenyl ketones ... See more keywords