کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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1315313 | 976017 | 2006 | 7 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: 1,1,3,3,3-Pentafluoropropene secondary amine adducts new selective fluorinating agents 1,1,3,3,3-Pentafluoropropene secondary amine adducts new selective fluorinating agents](/preview/png/1315313.png)
Addition of secondary amine SA (dimethylamine DMA, diethylamine DEA, pyrrolidine Pyr, piperidine Pip, morpholine Mor) to pentafluoropropene PFP gives rise to generation of mixtures of two products (1-dialkylamine-1,3,3,3-tetrafluoropropene and N,N-dialkyl-1,1,3,3,3-pentafluoropropylamine) in different ratios. Those reaction mixtures, however, were found to be efficient fluorinating agents replacing hydroxyl groups in alcohols into fluorine. In general, they react with alcohols yielding corresponding fluorides, equimolar amounts of appropriate 3,3,3-trifluoropropionamide and hydrogen fluoride. Aliphatic primary alcohols including octanol and benzylic alcohol yield only alkyl fluorides. The secondary and tertiary alcohols, beside the desired fluorides, give usually considerably amount of alkenes.
Reactions of 1,1,3,3,3-pentafluoropropene (PFP) and secondary amines give mixtures of adducts (PFPDAA), which serve as an efficient fluorinating agent replacing hydroxyl groups in alcohols. Figure optionsDownload as PowerPoint slide
Journal: Journal of Fluorine Chemistry - Volume 127, Issue 9, September 2006, Pages 1245–1251