کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1312806 975497 2007 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Photochemical carbon–sulfur bond cleavage in some alkyl and benzyl sulfides
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی معدنی
پیش نمایش صفحه اول مقاله
Photochemical carbon–sulfur bond cleavage in some alkyl and benzyl sulfides
چکیده انگلیسی

Irradiation (254 nm) of five alkyl and benzyl ethyl sulfides causes efficient (Φr 0.27–0.90) homolytic cleavage of the C–S bond. Of the resulting fragments, thiyl radicals mainly couple, while alkyl radicals abstract hydrogen, disproportionate or couple when stabilized (benzyl). Selective trapping of either of the two types of radicals occurs in the presence of nucleophilic (methyl vinyl ether and 1-hexene) and, respectively, electrophilic (acrylonitrile) alkenes. When an easily oxidized radical is formed, e.g. cumyl, secondary electron transfer leads to the corresponding cation.

Product distribution in neat solvent and in the presence of traps and quantum yield of photodecomposition have been determined for some alkyl and benzyl sulfides.Figure optionsDownload as PowerPoint slide

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Inorganica Chimica Acta - Volume 360, Issue 3, 15 February 2007, Pages 1230–1234
نویسندگان
, , , ,