کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1315148 976007 2006 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Synthesis and radical ring opening behaviour of 1,1-difluoro-2-heptyl-2-vinylcyclopropane and some of its isomers
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی معدنی
پیش نمایش صفحه اول مقاله
Synthesis and radical ring opening behaviour of 1,1-difluoro-2-heptyl-2-vinylcyclopropane and some of its isomers
چکیده انگلیسی

The syntheses and characterisations of 1,1-difluoro-2-heptyl-2-vinylcyclopropane and some of its isomers are described together with attempts to effect free radical ring opening polymerisation. We have recently shown that the parent monomer, 1,1-difluoro-2-vinylcyclopropane, undergoes predominantly 1,4-addition ring opening in contrast to the more usual 1,5-ring opening of other substituted vinylcyclopropanes and we find that the same anomalous behaviour occurs in this work confirming the influence of fluorine on the course of cyclopropane ring opening proposed by Dolbier. The presence of an alkyl chain modifies the ratios of 1,4- to 1,5-ring opening compared to that found in the unsubstituted parent monomer. In addition an the unexpected behaviour of different alkyl substituted buta-1,3-dienes towards difluorocarbene addition is described.

1,1-Difluoro-2-heptyl-2-vinylcyclopropane undergoes predominantly 1,4-addition ring opening to a lesser extent than 1,1-difluoro-2-vinylcyclopropane. Figure optionsDownload as PowerPoint slide

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Fluorine Chemistry - Volume 127, Issue 12, December 2006, Pages 1533–1539
نویسندگان
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