Trialkylsilylaminyl radicals. Part 1. Electron spin resonance studies of the photolysis of silylated hydrazines, hydroxylamines, triazenes, and tetrazenes
作者:John C. Brand、Brian P. Roberts、Jeremy N. Winter
DOI:10.1039/p29830000261
日期:——
C–H groups, adds to ethylene, t-butyl isocyanide, and trialkyl phosphites; the bis(triethylsilyl)-aminyl radical behaves similarly. Differences between (R3Si)2N˙ and (R3C)2N˙ are attributed to the σ-donor–π-acceptor substituent effect of the trialkylsilyl ligand. The reactivity of (R3Si)2N˙ is generally similar to that of ButO˙, although the steric congestion at the radical centre in the former results
已经通过电离能谱研究了液相uv光解许多三烷基甲硅烷基化的肼,羟胺,三氮烯和四烯所产生的自由基。双(三甲基硅烷基)-aminyl自由基(ME 3 Si)的2由(ME的光解产生的N,3 Si)的2 NN(森达3)2,(ME 3 Si)的2 NOSiMe 3,或(ME 3 Si)的2 NN NN(SiMe 3)2的反应性比二烷基氨基基团强得多。它从脂肪族CH基团中提取氢,并添加到乙烯,叔丁基异氰酸酯和亚磷酸三烷基酯中;双(三乙基甲硅烷基)-氨基自由基的行为类似。之间的差异(R 3 Si)的2 n和(R 3 C)2 N被归因于三烷基甲硅烷配体的σ供体-π-受体取代基的效果。(R 3 Si)2 N 3的反应性通常与Bu t O 3相似,尽管前者在自由基中心的空间拥塞导致偏向受阻较少部位的进攻。例如,虽然卜吨ö和H 2N 3都与异丁烷反应,主要得到Bu t 3,(Me 3 Si)2 N 4在室温以下主要得到Bu
Investigation of thermally induced .alpha.-deoxysilylation of organosilylated hydroxylamine derivatives as a general method for nitrene production
作者:Young Hwan Chang、Fang-Ting Chiu、Gerald Zon
DOI:10.1021/jo00315a024
日期:1981.1
New anionic rearrangements. XV. 1.2-Anionic rearrangement of organosilylhydroxylamines
作者:Robert. West、Philip. Boudjouk
DOI:10.1021/ja00793a026
日期:1973.6
An efficient method for the generation of N-methyl nitrones
作者:Jeffrey A. Robl、Jih Ru Hwu
DOI:10.1021/jo00350a110
日期:1985.12
On the synthesis of isoannulated pyrroles and δ-pyridones
作者:Wolfgang Eberbach、Norbert Laber
DOI:10.1016/s0040-4039(00)77673-8
日期:1992.1
The synthesis of furo- and thieno[2,3-c]pyridones 13a,b as well as the corresponding pyrroles 14a,b by using the 1,7-dipolar cyclization route of conjugated nitrones 9a,b is reported. In the presence of O2 and light the pyridones are converted into the pyridinediones 17a,b.