The reaction of dimethyl sulfoxide–trifluoroacetic anhydride complex with anilines, phenols, and thiophenols was studied, and the following results were obtained. (1) The yields of a methylthiomethylated product were improved with anilines. The reaction proceeded without significant amount of tar, the unreacted anilines being easily recovered. (2) Selective ortho-methylthiomethylation took place with
of N-[2-(methylsulfanylmethyl)aryl]pyrroles (4) with phenyliodine(III) bis(trifluoroacetate) containing trifluoroacetic acid resulted in an interrupted Pummerer-type reaction to give 5H-pyrrolo[1,2-a][3,1]benzothiazines (5) rather than the normal Pummerer-type products.
Crystal structures, spectroscopic and theoretical study of novel Schiff bases of 2-(methylthiomethyl)anilines
作者:Temitope E. Olalekan、Isaiah A. Adejoro、Bernardus VanBrecht、Gareth M. Watkins
DOI:10.1016/j.saa.2014.12.018
日期:2015.3
band gaps, dipolemoments and polarizability are discussed. Increase in electron density shifted the phenolic proton resonance to lower fields. The methoxy-substituted compound has a small dipole moment and subsequent large polarizability value. Highest polarity was indicated by the nitro compound which also showed high polarizability due to its larger size. The energy gaps obtained from ELUMO–HOMO