Nitroxide chemistry. Part II. Reaction of bistrifluoromethyl nitroxide with some alkanes and alkenes; free-radical dehydrogenation of alkanes to alkenes
作者:R. E. Banks、R. N. Haszeldine、B. Justin
DOI:10.1039/j39710002777
日期:——
Methane resists attack by bistrifluoromethyl nitroxide at room temperature, but hydrogen abstraction occurs with ethane [→ EtR, RCH2·CH2R, MeCOR; R =(CF3)2N·O throughout this paper], propane (→ PriR, MeCHR·-CH2R, Me2CO), isobutane (→ ButR, Me2CR·CH2R), isopentane (→ Me2CREt, Me2CR·CHRMe, RCH2·-CRMeEt), and neopentane (→ ButCH2R, ButCOR). Reaction of the nitroxide with 3-methylbut-1-ene at room temperature
甲烷在室温下可抵抗双三氟甲基硝基氧的攻击,但乙烷会吸收氢[ → EtR,RCH 2 ·CH 2 R,MeCOR; R =(CF 3)2 N·ö贯穿本文],丙烷(→镨我R,MeCHR·-CH 2 R,我2 CO),异丁烷(→卜吨R,我2 CR·CH 2 R),异戊烷(→ Me 2 CREt,Me 2 CR·CHRMe,RCH 2 ·-CRMeEt)和新戊烷(→ Bu t CH 2R,卜吨COR)。氮氧化物与3-甲基丁-1-烯在室温下的反应导致烯丙基叔氢的快速提取和异构丁烯Me 2 CR·CH:CH 2和Me 2 C:CH的1:1混合物的形成·CH 2 R几乎定量收率。当用双三氟甲基硝基氧处理异丁烯,2-甲基丁-1-烯,2-甲基丁-2-烯或四甲基乙烯时,加氢比提取氢更为重要。