Sulfonamidyls. 3. Electron spin resonance spectroscopic study of new acyclic and cyclic sulfonamidyl radicals

Kinetic applications of electron paramagnetic resonance spectroscopy. 39. Bimolecular self-reactions of some N-alkylcarboxyamidyl, N-alkylsulfonamidyl, and N-alkyl-N-(alkoxycarbonyl)aminyl radicals. Intermolecular hydrogen atom abstraction by N-ethylpropionamidyl radical

“…Electronic Ground State of Amidyl Radicals. We have shown previously by detailed analysis of the magnitude and temperature dependence of the EPR parameters of A-alkylcarboxamidyl radicals that these species have a -electronic ground state.6,7 Danen and Gellert9 have used our arguments and their results with the A-isopropylphenylsulfonamidyl radical to support a -electronic ground state for sulfonamidyl radicals, and such a ground state is also indicated by other EPR spectroscopic data.9, 27,30,31 Our own, more extensive study of the temperature dependence of the EPR parameters of sulfonamidyl radicals provides further support for a -electronic ground state (cf. data for RÑSO2CH3 and RÑC(0)C2H5 in Table I).…”

Geminal oxygen–nitrogen–halogen systems.N-Halohydroxylamine derivatives

“…1 Photolysis of solutions of N-bromo-N-alkoxysulfonamides 47 in CFCl 3 or in a mixture of CFCl 3 with CH 2 Cl 2 at 730 to 760 8C is accompanied by the generation of the corresponding N-alkoxysulfonamidyl radicals, which have been detected by EPR spectroscopy. 84,85 R=F, Cl, Br, C2F5O, C3F7OCF(CF3)CF2O; R=CF3, C5F11, SF5, FCO.…”

Addition of cyclopropylphosphonates to aldehydes

“…2a: IR (neat) 3620-3120,1210,1020, 780 cm"1; NMR (CDClg) 0.7-2.2 (m, 27 H), 2.7-3.4 (m, 2 ), 4.13 (quintet, 4 H, J = 7.2 Hz); 13C NMR (CDClg) 11. 2b: IR (neat) 3680-3120, 1200, 1020, 770 cm"1; NMR (CDClg) 0.8-2.2 (m, 12 ), 1.03 (t, 3 H, J = 7.2 Hz), 1.31 (dt, 6 H, J = 6.8, 2.7 Hz), 3.1-3.7 (m, 2 ), 4.10 (quintet, 4 H, J = 61.9, 62.2, 71.0, 71.2; MS, m/e 290 (M+). Anal.…”