کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1315438 | 976029 | 2008 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Cyclopropanation of alkenes with CH2I2/Et3Al by the phase-vanishing method based on fluorous phase screen
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موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی معدنی
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چکیده انگلیسی
Phase-vanishing (PV) method using perfluorohexanes as a screen phase was applied to cyclopropanation reactions with CH2I2/Et2Zn and CH2I2/Et3Al. When Et3Al was used as a carbenoid generator, the reaction proceeded smoothly and desired cyclopropane derivatives were obtained in high yield. The PV cyclopropanation took 2 or 3 days to complete, however, reduction of reaction time by a factor of 2–3 was also achieved by vigorous stirring after the bottom CH2I2 layer disappeared.
Cyclopropanation reactions with the Maruoka–Yamamoto reagent (Et3Al/CH2I2) were carried out successfully using fluorous media as a phase screen. Figure optionsDownload as PowerPoint slide
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Fluorine Chemistry - Volume 129, Issue 10, October 2008, Pages 951–954
Journal: Journal of Fluorine Chemistry - Volume 129, Issue 10, October 2008, Pages 951–954
نویسندگان
Hiroshi Matsubara, Masaaki Tsukida, Shinji Yasuda, Ilhyong Ryu,