ChemInform Abstract: PROGRESS IN THE CHEMISTRY OF AZA ANALOGS OF SULFUR DIOXIDE

Bis(trimethylsilyl)diazene revisited. Density functional theory (DFT) calculations of nitrogen NMR parameters of some azo‐compounds

“…Bis(trimethylsilyl)sulfur diimide is known to react with various unsaturated substrates [23]. The reaction of the sulfur diimide in pentane at −78 • C with an excess of bis(trimethylsilyl)amino(trimethylsilyl)-iminophosphane led to abstraction of sulfur and SCHEME 1 Azo-compounds and amino-nitrenes considered in this work.…”

N‐alkyl‐C‐polyfluoroalkyl‐C‐chlorosulfinimides RFC(Cl)SNR

“…The bulk of an alkyl substituent at the nitrogen atom seems to exert no appreciable effect on the thermal stability of each compound (1). Thus, N-methylsulfinimide (Id) is vacuum distillable, in contrast to related sulfur-containing heterocumulenes Alk-N=S=X (X = 0, NR), which are thermally unstable in compounds even having a normal alkyl substituent at the nitrogen atom [12]. On the other hand, polyfluoroalkyl substituents appeared to increase the thermal stability of compounds (1).…”

Darstellung, Charakterisierung, quantenchemische Berechnungen und chemische Reaktionen von Schwefeldiimin, dessen Ag- und Tl-Salze sowie TlNSO

“…Versuche von Ha Ènssgen und Ross [9], monosubstituierte Schwefeldiimide gema Èû KNSNC(CH 3 ) 3 + NH 4 Cl NH3 HNSNC(CH 3 ) 3 + KCl + NH 3 (1) KNSNSi(CH 3 ) 3 + NH 4 Cl NH3 HNSNSi(CH 3 ) 3 + KCl + NH 3 (2) darzustellen, fu È hrten zu einer quantitativen Fa È llung von KCl und einer roten Lo È sung, die neben einem komplexen Gemisch von S±N-Verbindungen [S 4 N 4 und (SN) x konnten nachgewiesen werden] zusa È tzlich bei Reaktion (1) tert-Butylamin und bei Reaktion (2) (CH 3 ) 3 SiNSNSi(CH 3 ) 3 enthielt. In beiden Fa È llen wurde prima È r die Bildung von HNSNR angenommen, das sich anschlieûend weiter zu S 4 N 4 , (SN) x etc.…”