化学
芳基
烷基
催化作用
硫黄
冷凝
氧化磷酸化
有机化学
药物化学
高分子化学
生物化学
热力学
物理
作者
Le Viet Nguyen,Thi H. O. Nguyen,Quoc Ngo,Thanh N. Nguyen
标识
DOI:10.1002/adsc.202200527
摘要
While elemental sulfur has been largely used as oxidant or sulfurating agent, its role as a catalyst has not been developed. We report here its catalytic activity in the oxidative condensation of o-phenylenediamines with acetophenones in DMSO to provide quinoxalines. The method was also extended to α-tetralones, propiophenones (R=Me) as well as higher homologues (R=Et, n-Pr) in place of acetophenones, leading to a wide range of naphthoquinoxalines and 3-substituted 2-arylquinoxalines.
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