کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
27942 | 44051 | 2008 | 12 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
The effect of fluorine as leaving group in the photolysis of 2-fluoro-1,2-diphenylethanone: Preparative and mechanistic investigation
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
بیو مهندسی (مهندسی زیستی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: The effect of fluorine as leaving group in the photolysis of 2-fluoro-1,2-diphenylethanone: Preparative and mechanistic investigation The effect of fluorine as leaving group in the photolysis of 2-fluoro-1,2-diphenylethanone: Preparative and mechanistic investigation](/preview/png/27942.png)
چکیده انگلیسی
Photolysis of 2-fluoro-1,2-diphenylethanone (1) in MeCN or MeOH produces mainly 2-phenylbenzofuran. In MeOH some traces of solvent addition to the benzoyl radical formed by α-cleavage were detected. In trifluoroethanol several products are due to direct α-cleavage. Only 3% of 2-phenylbenzofuran and 13% of the α-ketocation solvent adduct are formed. The triplet state of 1 observed in nanosecond experiment at low temperature has been confirmed in femtosecond experiment. The triplet is formed quite fast at 370 nm (rise time 4.5 ps in acetonitrile and 22 ps in trifluoroethanol) and is stable up to 1.9 ns (a lifetime of 20 ns has been determined by quenching experiments with naphthalene).
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Photochemistry and Photobiology A: Chemistry - Volume 199, Issue 1, 5 September 2008, Pages 73–84
Journal: Journal of Photochemistry and Photobiology A: Chemistry - Volume 199, Issue 1, 5 September 2008, Pages 73–84
نویسندگان
Berta Košmrlj, Hassen Boudebous, Boris Šket,