1972
DOI: 10.1021/ja00769a048
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3,3,4,4-Tetramethyl-1,2-diazetine 1,2-dioxide, a useful low-energy triplet quencher

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Cited by 66 publications
(27 citation statements)
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“…THF and diethylether were distilled from LiAlH,*, hydrocarbon solvents from sodium before use. 3,3,4,4-Tetramethyl-1,2-diazetine [15], its mono N-oxide [15] and its N,N'-dioxide [16] were prepared and purified according to the literature. IR spectra were measured on Perkin-Elmer 257 and 680 instruments, NMR spectra on Perkin-Elmer R 12, mass spectra on Du Pont 492-B and MATCH 5.…”
Section: Methodsmentioning
confidence: 99%
“…THF and diethylether were distilled from LiAlH,*, hydrocarbon solvents from sodium before use. 3,3,4,4-Tetramethyl-1,2-diazetine [15], its mono N-oxide [15] and its N,N'-dioxide [16] were prepared and purified according to the literature. IR spectra were measured on Perkin-Elmer 257 and 680 instruments, NMR spectra on Perkin-Elmer R 12, mass spectra on Du Pont 492-B and MATCH 5.…”
Section: Methodsmentioning
confidence: 99%
“…The UV irradiation of azodioxides in solution at room temperature causes their decomposition, either by extrusion of NO [43][44][45], or by molecular rearrangements [46]. There are also some indications based on the UV-VIS spectroscopy, that UV irradiated azodioxides in solution at −60 • C could dissociate to corresponding nitroso monomers [47].…”
Section: Dimerization Starting From the "Intimate Monomer Pair"mentioning
confidence: 99%
“…-I3C-NMR. : 24,4,27,3,29,1,29,8 (4qa,4 CH3);17,8,22,5,25,0,31,4,37,8 ( 5 t,5 CHI); 44,3 ( t , C(3)); 22,9, 32,5, 32,7 (3 s 1.2. Herstellung der Enolacetate von 12.…”
Section: Experimenteller Teilmentioning
confidence: 99%
“…(CDCl3): -0,04 bis 0,22 und 0,36 bis 0,70 (2m, 2 H-C(7'), H-C(6')); 0,80, 0,99 ( 2 4 H3C-C(1'), 2 H3C-C(3')); 0,75-2,06 (m, 7 H); 1,88 (m mit Feinaufspaltung, W1/2=3, H3C-C(1)); 2,14 (s, CH3COO); 5,15 (t mit Feinaufspaltung,J = 7 ,150 (16), 137 (77), 123 (21), 121 (21), 111 (42), 109 (29), 107 (19), 95 (60). 94 (25), 93 (25), 91 (13), 81 (50), 79 (21), 71 (58), 69 (21), 67 (19), 57 (7), 55 (19), 53 (9), 43 (loo), 41 (30).…”
Section: Essigsaure-[l-methyl-3-(i'3'3'-trimethylbicyclo[41o]heptunclassified