[4 + 2]-Annulation of Prop-2-ynylsulfonium Salts and Isatoic Anhydrides: Access to 3-Methylthio-4-quinolones
作者:Qinfang Chen、Yihao Pan、Tingting Yue、Weiran Yang、Hua Liu、Jing Zheng
DOI:10.1021/acs.orglett.0c02173
日期:2020.8.7
An unparalleled [4 + 2]-annulation of prop-2-ynylsulfonium salts with isatoic anhydrides was developed, affording a series of 4-quinolones with a alkylthio group in medium to good yields under mild conditions. In this reaction type, the prop-2-ynylsulfonium salt serves as a C2 synthon and sulfide does not act as a leaving group, providing facile access to organosulfur compounds. The resulting quinolone
开发了无与伦比的[4 + 2]丙-2-炔基salts盐与isatoic酸酐,在温和条件下以中等至良好收率提供了一系列带有烷硫基的4-喹诺酮。在这种反应类型中,丙-2-炔基salt盐充当C2合成子,硫化物不充当离去基团,提供了轻松接触有机硫化合物的途径。所得的喹诺酮产物可以进一步转化为多种合成上有用的化合物。