Synthesis of Benzothiadiazine-1-oxides by Rhodium-Catalyzed C−H Amidation/Cyclization
作者:Peng Shi、Yongliang Tu、Chenyang Wang、Deshen Kong、Ding Ma、Carsten Bolm
DOI:10.1021/acs.orglett.0c03212
日期:2020.11.20
A rhodium-catalyzed C−H amidation/cyclization sequence provides benzothiadiazine-1-oxides from sulfoximines and 1,4,2-dioxazol-5-ones in good yields. The reaction is characterized by a high functional group tolerance and, in contrast to most previous transformations of this type, is well-suited for S-alkyl-S-aryl-substituted sulfoximines.
铑催化的CH酰胺化/环化序列可从磺胺嘧啶和1,4,2-二恶唑-5-酮中获得高收率的苯并噻二嗪-1-氧化物。该反应的特征在于高的官能团耐受性,并且与该类型的大多数先前的转化相反,该反应非常适合于S-烷基-S-芳基取代的亚磺酰亚胺。