| OLIGOMERIZATION AND POLYMERIZATION OF PERFLUOROALKENES AND PERFLUOROALKYNES CATALYZED BY π-BIS (ARENE) CHROMIUM (0) COMPLEXES |
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| 引用本文： | 黄耀曾,李基森,周坚强,陈镜泓,朱钟沐.OLIGOMERIZATION AND POLYMERIZATION OF PERFLUOROALKENES AND PERFLUOROALKYNES CATALYZED BY π-BIS (ARENE) CHROMIUM (0) COMPLEXES[J].中国科学B辑(英文版),1983(12). |
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| 作者姓名： | 黄耀曾 李基森 周坚强 陈镜泓 朱钟沐 |
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| 作者单位： | Shanghai Institute of Organic Chemistry，Academia Sinica，Shanghai Institute of Organic Chemistry，Academia Sinica，Shanghai Institute of Organic Chemistry，Academia Sinica，Shanghai Institute of Organic Chemistry，Academia Sinica，Shanghai Institute of Organic Chemistry，Academia Sinica |
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| 摘 要： | Oligomerization of perfluoropropylene catalyzed by π-bis-(arene)chromium(0) gave two dimers(ⅡA and ⅡB), two trimers(ⅢA and ⅢB) and two defluorotrimers(ⅣA and ⅣB). The last were found to arise from hydrogenation of ⅢB followed by dehydrofluorination. Hydrogen fluoride evolved was added to perfluoropropylene to give 2-hydroheptafluoropropane. By using labeling technique, hydrogen was found to arise from ligand presumably through π-σ rearrangement, A possible mechanism was proposed, π-Bis(benzene)chromium(0) was able to catalyze the polymerization of perfluorobut-2-yne to form its polymer, a white powder. The same catalyst could catalyze copolymerization of CF_3CCCF_3 and CF3CFCF_2 to give solid copolymer. Three perfluoro-2-alkynenitriles (CF_3CC-CN,C_2F_5CC-CN, n-C_3F_7CC-CN) were successfully synthesized by intramolecular Wittig reaction and one of them, i.e, C_2F_5C CCN was polymerized catalytically by π-bis(benzene)chromium(0) to give its polymer. a black powder.
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