Infrared Spectra of Phenylsulfonyl Derivatives. (4). The Infrared Spectra of N-Acylsulfonamide Derivatives. (Organic Analysis. XLVIII)
作者:Yo Ueda、Hiroshige Yano、Tsutomu Momose
DOI:10.1248/cpb.12.5
日期:——
The splitting phenomenon of the carbonyl absorptions and the shifts of S-N stretching vibrations to a longer wave length region of some N-acyl-N-substituted-sulfonamide derivatives measured in solid state were described. Tertiary sulfonamides had their SO2 stretching vibrations at a shorter wave length region than secondary sulfonamides. N-Acetyl-N-alkylmethane (or ethane) sulfonamide showed strong C-N stretching vibrations of the group N-CH2-R at about 1125cm-1. N-Acyl-N-substituted-sulfonamide derivatives had very strong asymmetric stretching vibrations of the group C-CO-N at 1250∼1290cm-1. Synthesis of some sulfonamide derivatives is also described.
Mechanism of Visible Light-Mediated Alkene Aminoarylation with Arylsulfonylacetamides
作者:Anthony R. Allen、Jia-Fei Poon、Rory C. McAtee、Nicholas B. Watson、Derek A. Pratt、Corey R.J. Stephenson
DOI:10.1021/acscatal.2c02577
日期:2022.7.15
Alkene aminoarylation with arylsulfonylacetamides via a visiblelight-mediated radical Smiles–Truce rearrangement represents a convenient approach to the privileged arylethylamine pharmacophore traditionally generated by circuitous, multistep sequences. Herein, we report detailed synthetic, spectroscopic, kinetic, and computational studies designed to interrogate the proposed mechanism, including the
Transacylation of N-acylsulfonamides, which replaces the N-acyl group with a new one, is a challenging and underdeveloped fundamental transformation. Herein, a general method for transacylation of N-acylsulfonamides is presented. The transformation is enabled by coincident catalytic reactivities of FeCl3 for nonhydrolytic deacylation of N-acylsulfonamides and subsequent acylation of the resultant sulfonamides