Sulfur‐Catalyzed Oxidative Condensation of Aryl Alkyl Ketones with <i>o</i> ‐Phenylenediamines: Access to Quinoxalines
نویسندگان
چکیده
While elemental sulfur has been largely used as oxidant or sulfurating agent, its role a catalyst not developed. We report here catalytic activity in the oxidative condensation of o-phenylenediamines with acetophenones DMSO to provide quinoxalines. The method was also extended α-tetralones, propiophenones (R=Me) well higher homologues (R=Et, n-Pr) place acetophenones, leading wide range naphthoquinoxalines and 3-substituted 2-arylquinoxalines.
منابع مشابه
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ژورنال
عنوان ژورنال: Advanced Synthesis & Catalysis
سال: 2022
ISSN: ['1615-4169', '1615-4150']
DOI: https://doi.org/10.1002/adsc.202200527