New advances in the synthesis of 3,1-benzoxazines (microreview)
Sign Up to like & getrecommendations! Published in 2019 at "Chemistry of Heterocyclic Compounds"
DOI: 10.1007/s10593-019-02524-3
Abstract: The microreview is devoted to the methods of synthesis of 3,1-benzoxazines, published over the past 5 years. read more here.
Keywords: new advances; advances synthesis; synthesis benzoxazines; benzoxazines microreview ... See more keywords
Synthesis of 4H-1,3-Benzoxazines via Metal- and Oxidizing Reagent-Free Aromatic C-H Oxygenation.
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DOI: 10.1021/acs.orglett.7b03152
Abstract: An unprecedented electrochemical aromatic C-H oxygenation reaction for the synthesis of 4H-1,3-benzoxazines from easily available N-benzylamides is reported. These oxidative cyclization reactions proceed in a transition metal- and oxidizing reagent-free fashion and produce H2 as… read more here.
Keywords: oxygenation; oxidizing reagent; synthesis benzoxazines; metal oxidizing ... See more keywords
Synthesis of 1,4-benzoxazines via Y(OTf)3-catalyzed ring opening/annulation cascade reaction of benzoxazoles with propargylic alcohols.
Sign Up to like & getrecommendations! Published in 2022 at "Chemical communications"
DOI: 10.1039/d2cc03080b
Abstract: A convenient Y(OTf)3-catalyzed cascade formal [4 + 2] cyclization approach for the formation of 1,4-benzoxazine scaffolds from benzoxazoles and propargyl alcohols through a ring-opening and regioselective ring-closure process has been developed. By using this mild… read more here.
Keywords: otf catalyzed; benzoxazines via; via otf; synthesis benzoxazines ... See more keywords