A convenient synthesis of sulfonamides and sulfonylazidesfromthiols is described. In situ preparation of sulfonyl chlorides fromthiols was accomplished by oxidation with chloramine‐T (=N‐chlorotosylamide=N‐chloro‐4‐methylbenzenesulfonamide), tetrabutylammonium chloride (Bu4NCl), and H2O. The sulfonyl chlorides were then further allowed to react with excess amine or NaN3 in the same pot.
A convenient synthesis of sulfonamidesand sulfonylazidesfromthiols is described. In situ preparation of sulfonyl chlorides fromthiols is accomplished by oxidation with N-chlorosuccinimide (NCS), tetrabutylammonium chloride, and water. The sulfonyl chlorides are then further allowed to react with excess amine or sodium azide in the same reaction vessel.
Convenient One-Pot Synthesis of Sulfonamides from Thiols and Disulfides Using 1,3-Dichloro-5,5-dimethylhydantoin (DCH)
作者:Hojat Veisi
DOI:10.5012/bkcs.2012.33.2.383
日期:2012.2.20
A convenient synthesis of sulfonamidesfromthiols and disulfides is described. In situ preparation of sulfonyl chlorides fromthiols is accomplished by oxidation with 1,3-dichloro-5,5-dimethylhydantoin (DCH) under Nbenzyl-trimethylammonium chloride and water. The sulfonyl chlorides are then further allowed to react with excess amine in the same reaction vessel.
Gold-Catalyzed <i>syn</i>-1,2-Difunctionalization of Ynamides via Nitrile Activation
作者:Rajeshwer Vanjari、Shubham Dutta、Manash P. Gogoi、Vincent Gandon、Akhila K. Sahoo
DOI:10.1021/acs.orglett.8b03830
日期:2018.12.21
Developed is an unprecedented Au(I)-catalyzed syn-1,2-difunctionalization of ynamides with 2-aminobenzonitriles via nitrile activation. The coupling between ynamides and 2-aminobenzonitriles is explicitly regioselective, providing a straightforward access to 2,4-diamino-substituted quinolines. Density functional theory (DFT) study provides insightful information and rationalizes the reaction pathway