Cyclizations of NH-S-(2-hydroxyaryl)sulfoximines with 1,1′-carbonyldiimidazol (CDI) give unprecedented benzo[e][1,4,3]oxathiazin-3-one 1-oxides in good yields. The standard synthetic protocol involves the use of DCE at an increased temperature for 16 h. Under mechanochemical conditions, a representative product was obtained without a solvent at ambient temperature in only 60 min. X-ray single-crystal
N H- S- (2-羟基芳基)亚磺
酰亚胺与 1,1'-羰基二
咪唑 (
CDI) 环化,以良好的产率得到前所未有的苯并[ e ][1,4,3]恶
噻嗪-3-酮 1-氧化物。标准合成方案涉及在升高的温度下使用 DCE 16 小时。在机械
化学条件下,无需溶剂,在环境温度下仅需 60 分钟即可获得代表性产物。 X射线单晶结构分析证实了代表三维杂环的分子支架。