Photocatalytic Regioselective Difunctionalization of Alkenes with Diazo Compounds and tert-Butyl Nitrite: Access to γ-Oximino Esters.
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DOI: 10.1021/acs.orglett.2c02749
Abstract: A visible-light photocatalytic regioselective difunctionalization of alkenes with diazo compounds and tert-butyl nitrite has been developed. The protocol provides an efficient approach to γ-oximino esters under mild conditions. Significantly, this transformation not only shows the… read more here.
Keywords: difunctionalization alkenes; butyl nitrite; diazo compounds; photocatalytic regioselective ... See more keywords
Photocatalytic Regioselective [2 + 2 + 1] Radical Annulation of Alkenes with tert-Butyl Nitrite and gem-Dihalides.
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DOI: 10.1021/acs.orglett.2c03635
Abstract: A visible-light photocatalytic regioselective [2 + 2 + 1] radical annulation reaction of alkenes, tert-butyl nitrite, and gem-dihalides has been developed. The protocol provides an efficient and practical approach to obtain isoxazolines in good yields… read more here.
Keywords: gem dihalides; butyl nitrite; radical annulation; photocatalytic regioselective ... See more keywords
Visible-Light-Mediated Radical Silyl-Oximation of Activated Alkenes Using tert-Butyl Nitrite and Silanes.
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DOI: 10.1021/acs.orglett.2c03644
Abstract: A metal-free radical 1,2-difunctionalization of activated alkenes with various silanes and tert-butyl nitrite is reported. The radical cascade occurs by light-promoted homolytic O-NO bond cleavage of tert-butyl nitrite and subsequent hydrogen atom abstraction by the… read more here.
Keywords: tert butyl; activated alkenes; butyl nitrite; silyl oximation ... See more keywords
Visible-Light-Induced Arene C(sp2)–H Lactonization Promoted by DDQ and tert-Butyl Nitrite
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DOI: 10.1055/s-0039-1691537
Abstract: A visible-light photocatalytic aerobic oxidative lactonization of arene C(sp2)–H bonds proceeds in the presence of 2,3-dichloro-5,6-dicyano-1,4-benzoquinone (DDQ) and tert-butyl nitrite (TBN). Under the optimized conditions, a range of 2-arylbenzoic acids is converted into the corresponding… read more here.
Keywords: ddq tert; arene sp2; visible light; tert butyl ... See more keywords
Telescopic Synthesis of Azo Compounds via Stable Arenediazonium Tosylates by Using n-Butyl Nitrite as Diazotization Reagent
Sign Up to like & getrecommendations! Published in 2019 at "Polycyclic Aromatic Compounds"
DOI: 10.1080/10406638.2017.1326951
Abstract: ABSTRACT A multi-step catalyst-free synthesis of azo compounds by using n-butyl nitrite as a diazotization reagent and p-toluene sulfonic acid as a mild acidic agent in ethanol/water mixed solvent was investigated. In the combined one-pot… read more here.
Keywords: azo compounds; synthesis azo; using butyl; diazotization ... See more keywords