Synthesis of aza-rocaglates via ESIPT-mediated (3+2) photocycloaddition [PDF]
, 2016 Synthesis of aza-rocaglates, nitrogen-containing analogues of the rocaglate natural products, is reported. The route features ESIPT-mediated (3+2) photocycloaddition of 1-alkyl-2-aryl-3-hydroxyquinolinones with the dipolarophile methyl cinnamate.
Cencic, Regina +4 more
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Phosphine-Catalyzed Annulations of Azomethine Imines: Allene-Dependent [3 + 2], [3 + 3], [4 + 3], and [3 + 2 + 3] Pathways [PDF]
, 2011 In this paper we describe the phosphine-catalyzed [3 + 2], [3 + 3], [4 + 3], and [3 + 2 + 3] annulations of azomethine imines and allenoates. These processes mark the first use of azomethine imines in nucleophilic phosphine catalysis, producing ...
Benitez, Diego +12 more
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Tandem Catalysis: Synthesis of Nitrogen-Containing Heterocycles [PDF]
Catalysts, 2020 In this Review, we consider all the publications since the beginning of the century that describe tandem reactions resulting in the formation of five-membered aromatic nitrogen heterocycles (thiazole, imidazole, indole, tetrazole, triazole, and isoxazole). The contents of this review are organized by taxonomy and type of tandem catalysis.
Joana F. Campos, Sabine Berteina-Raboin
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Acta Chimica Slovenica, 2022 Nitrogen-containing heterocycles have been extensively studied due to their broad biological and pharmaceutical applications. In this study, we synthesized five- and six-membered nitrogen-containing rings through one-pot multicomponent reaction using an ...
Fatemeh Mostaghni +2 more
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2-aminophenols containing electron-withdrawing groups from N-aryl hydroxylamines [PDF]
, 2010 Reaction of substituted N-aryl hydroxylamines with methanesulfonyl chloride, p-toluenesulfonyl chloride, or trifluoromethanesulfonic anhydride under basic conditions leads to the rearranged 2-aminophenols (45-94%).
Cooper, Anthony W. J. +3 more
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Direct introduction of nitrogen and oxygen functionality with spatial control using copper catalysis. [PDF]
, 2018 Synthetic chemists have spent considerable effort optimizing the synthesis of nitrogen and oxygen containing compounds through a number of methods; however, direct introduction of N- and O-functionality remains challenging.
Fisher, David J +4 more
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Heterocyclic nitrogen-containing compounds in hamanatto.
JOURNAL OF THE SOCIETY OF BREWING,JAPAN, 1985 香気成分として重要な含窒素環状化合物の浜納豆における種類及び含量を測定した。ジクロロメタンによる直接溶媒抽出法により塩基性抽出画分を調製し, FTD装備のGC及びGC-MS分析により同定定量した。11種類のピラジン, ピリジン, N-メチルピロリドン, ベンゾチアゾール, 2-アセチルピロールが検出された。ピラジン化合物の総含量は629 ppbであった。閾値との比較より, ピラジン化合物が浜納豆の香気に寄与している可能性があることが示唆された。
Yutaka MORI, Kan KICHI
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Triggering redox activity in a thiophene compound: radical stabilization and coordination chemistry [PDF]
, 2006 The synthesis, metalation, and redox properties of an acyclic bis(iminothienyl)methene L− are presented. This π-conjugated anion displays pronounced redox activity, undergoing facile one-electron oxidation to the acyclic, metal-free, neutral radical L ...
Davison +46 more
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Synthetic utility and reactivity of N-alkynylazoles [PDF]
, 2015 textThe chemistry of N-alkynylazoles is a newly emerging area of chemistry with particular interest in heterocycle synthesis. Synthetic preparations of this class of molecule have shown an increasing presence in literature, however, the synthetic ...
Gilbreath, Bradford Lynd
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C=N-containing azaarenes as activating groups in enantioselective catalysis [PDF]
, 2013 Nitrogen-containing aromatic heterocycles (azaarenes) are of widespread chemical significance, and chi-ral compounds containing azaarenes feature prominently in pharmaceuticals, agrochemicals, and natural products.
Best, Daniel, Lam, Hon Wai
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