Brønsted Acid Promoted Cyclization of Cross‐Conjugated Enynones into Dihydropyran‐4‐ones
Sign Up to like & getrecommendations! Published in 2017 at "European Journal of Organic Chemistry"
DOI: 10.1002/ejoc.201700423
Abstract: In triflic acid or sulfuric acid, diaryl-substituted cross-conjugated enynones undergo addition of the acid to the carbon–carbon triple bond to afford the corresponding vinyl triflates or sulfates. The vinyl triflates are stable under aqueous workup,… read more here.
Keywords: cyclization; vinyl triflates; conjugated enynones; dihydropyran ones ... See more keywords
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
Recent Advances in the Synthesis of 3,4-Dihydropyran-2-Ones Organocatalyzed by N-Heterocyclic Carbenes
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DOI: 10.3390/molecules28093743
Abstract: In recent years, N-heterocyclic carbenes (NHC) have gained recognition as versatile molecules capable of acting as organocatalysts in various reactions, particularly through the activation of aldehydes via Breslow-type adducts. This organocatalytic activation has enabled the… read more here.
Keywords: dihydropyran; dihydropyran ones; advances synthesis; heterocyclic carbenes ... See more keywords