Photosensitized Oxidation of Alkyl Phenyl Sulfoxides. C−S Bond Cleavage in Alkyl Phenyl Sulfoxide Radical Cations
作者:Enrico Baciocchi、Tiziana Del Giacco、Osvaldo Lanzalunga、Paolo Mencarelli、Barbara Procacci
DOI:10.1021/jo801088n
日期:2008.8.1
deriving from the heterolytic C−S bond cleavage in the sulfoxide radical cations (alcohols, R1R2R3COH, and acetamides, R1R2R3CNHCOCH3) accompanied by sulfur-containing products (phenyl benzenethiosulfinate, diphenyl disulfide, and phenyl benzenethiosulfonate). By laser irradiation, the formation of 3-CN-NMQ• (λmax = 390 nm) and sulfoxide radical cations 1•+, 2•+, and 5•+ (λmax = 550 nm) was observed within
的3-氰基Ñ -methylquinolinium高氯酸盐(3-CN-NMQ + CLO 4 - )苯基烷基亚砜的-photosensitized氧化(PhSOCR 1 - [R 2 - [R 3,1,R 1 = R 2 = H,R 3 = Ph值; 2,R 1= H,R 2= Me,R 3= Ph;3,R 1= R 2= Ph,R 3= H;4,R 1= R 2= Me,R 3= Ph;5,R 1 = R 2 = R 3 = Me)已通过稳态辐射和MeCN中氮下的纳秒激光闪光光解(LFP)进行了研究。稳态光解表明,亚砜自由基阳离子(醇,R 1 R 2 R 3 COH和乙酰胺,R 1 R 2 R 3 CNHCOCH 3)中杂合C-S键的裂解产生了产物,并伴随着硫-含有产品(苯苯硫基磺酸盐,二苯二硫和苯苯硫基磺酸盐)。通过激光辐照,形成3-CN-NMQ •(λmax= 390 nm)和亚砜自由基阳离子1