α-Cyano-sulphonyl chlorides: their preparation and reactions with amines, alcohols, and enamines
作者:M. P. Sammes、C. M. Wylie、J. G. Hoggett
DOI:10.1039/j39710002151
日期:——
Cyanomethanesulphonyl chloride has been prepared, and some aspects of its chemistry have been investigated. Reactions with primary and secondary amines led to the expected sulphonamides, but sulphonates derived from reactions with alcohols were in most cases too unstable to be isolated. Reactions with enamines gave either substituted thietan 1,1-dioxides or acyclic sulphones, depending upon whether the enamine was derived
N-Chlorotaurine (NCT) is known to play an important role in the human defence system. The already proved utility of the sodium salt as a disinfectant in human medicine suggested a thorough investigation of its chemical properties. Chlorine transfer to N-H groups (transhalogenation) and oxidation of thio and aromatic compounds represent its main reactions. Auto-chlorination causes disproportionation forming N,N-dichlorotaurine (NDCT) with K-d = [NDCT][taurine]/f(a)[NCT](2) aH(+) = (4.5 +/- 0.8) x 10(6), while the reaction with ammonium releasing NH2Cl is characterised by K-NHCl2 = [NH2Cl][taurine]/[NCT][NH4+] f(a)(2) = 0.02 +/- 0.004. The verified unique stability and low-level level reactivity of NCT are considered essential for its function in the mammalian defence system and its practical applicability, which manifests itself in an optimal compromise between microbicidal activity and toxicity.