Treatment of N-aryl-2-(benzylthio)benzamides with phenyliodine(III) bis(trifluoroacetate) containing trifluoroacetic acid resulted in an interrupted Pummerer-type reaction in ionicliquid 1-n-butyl-3-methylimidazolium hexafluorophosphate, [bmim][PF 6 ] to give 2-aryl-1,2-benzisothiazol-3(2H)-ones rather than the normal Pummerer-type products.
Benzyl and t-butyl sulfoxides as sulfenyl halide equivalents: a convenient preparation of benzisothiazolones
作者:Stephen W. Wright、Matthew M. Abelman、Lori L. Bostrom、Ronald L. Corbett
DOI:10.1016/0040-4039(92)88037-6
日期:1992.1
A new methodology is described for the synthesis of benzisothiazolones from benzylsulfinyl or t-buthylsulfinyl substituted carboxamides that provides a mild alternative to conventional cyclization methods that employ halogens.
Ligand-free access to benzisothiazolones and benzisoselenazolones through NiFe<sub>2</sub>O<sub>4</sub> catalyzed concomitant annulation of 2-halobenzanilides with chalcogens and their late-stage transformations
作者:Samiran Dhara、Moumita Saha、Asish R. Das
DOI:10.1039/d2nj04326b
日期:——
temperature and useful application of synthesized molecules. The rarely explored chemistry of NiFe2O4 towards the X–N cross-coupling reaction well complements conventional methods for the synthesis of S–N or Se–N heterocycles. Nickel ferrite nanoparticles were prepared by a simple hydrothermal method and characterized by using XRD, SEM, TEM, HRTEM, SAED, energy dispersive X-ray spectroscopy, XPS, ICP-AES and