کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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1315611 | 976052 | 2007 | 6 صفحه PDF | دانلود رایگان |
An efficient method for the preparation of α-(trifluoromethyl)-cyclopropylphosphonates and α-(trifluoromethyl)-1,2-epoxyphosphonates has been developed. The method is based on metal-catalyzed reaction of diethyl 1-diazo-2,2,2-trifluoroethylphosphonate (1) with alkenes or carbonyl compounds, respectively. It established an essential advantage of CuI-catalysis over Rh2(OAc)4 in cyclopropanation reactions. An inexpensive copper iodide has also exhibited a good catalytic activity in the synthesis of epoxyphosphonates (3).
An efficient method for transformation of diethyl 1-diazo-2,2,2-trifluoroethylphosphonate to α-(trifluoromethyl)-cyclopropylphosphonates and α-(trifluoromethyl)-1,2-epoxyphosphonates has been developed. Figure optionsDownload as PowerPoint slide
Journal: Journal of Fluorine Chemistry - Volume 128, Issue 7, July 2007, Pages 723–728