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Ph_3P/CF_3CCl_3作为一个新的羰基烯烃化试剂的研究——一锅法合成烯烃RCH=CClCF_3
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作者 李兴亚 傅伟敏 +1 位作者 麻生明 蒋锡夔 《化学学报》 SCIE CAS CSCD 北大核心 1989年第4期36-36,共1页
Ph_3P/CF_3CCl_3与醛在室温下一锅反应生成三氟甲基取代的烯烃RCH=CClCF_3(3)。芳香醛及α,β-不饱和醛的反应显示高度立体选择性,给出Z式异构体。而饱和脂肪醛的反应立体选择性较低,Z与E式异构体的比例为2:1至3:1。反应可能是经由叶立... Ph_3P/CF_3CCl_3与醛在室温下一锅反应生成三氟甲基取代的烯烃RCH=CClCF_3(3)。芳香醛及α,β-不饱和醛的反应显示高度立体选择性,给出Z式异构体。而饱和脂肪醛的反应立体选择性较低,Z与E式异构体的比例为2:1至3:1。反应可能是经由叶立德Ph_3P-CClCF_3的Wittig型反应。本工作表明,Pa_3P/CF_3CCl_3可以作为在十分温和的条件下向有机分子中引入=CClCF_3结构单元的方便试剂。 展开更多
关键词 RCH=CClCF3 合成 PH3P cf3ccl3
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The CO_2 laser-induced radical-chain reactions between CH_3CF_2H and chlorine-atom donors CF_2ClCFCl_2, CF_3CCl_3 CFCl_3 or CF_2Cl_2
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作者 LI, Fang-Lin SHI, Ji-Liang +2 位作者 BI, Qi-Xiu GU, Jia-Liang JIANG, Xi-Kui Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032 《Chinese Journal of Chemistry》 SCIE CAS CSCD 1992年第3期245-252,共0页
The CO_2 laser induced room temperature reactions of CH_3CF_2H or another protium-donor CH_3CHClCH_3 with chlorine-atom donors (Z--Cl) CFCl_2CF_2Cl, CF_3CCl_3, CFCl_3 or CF_2Cl_2, have been investigated. Some of these... The CO_2 laser induced room temperature reactions of CH_3CF_2H or another protium-donor CH_3CHClCH_3 with chlorine-atom donors (Z--Cl) CFCl_2CF_2Cl, CF_3CCl_3, CFCl_3 or CF_2Cl_2, have been investigated. Some of these reactions can yield two important monomers (CF_2=CH_2 and CF_2=CFCl) for fluoropolymers simultaneously. The yield dependence of these two alkenes on experi- mental conditions has been studied. A laser-initiated chain process is supported by identifica- tion of Z--H intermediates in these reactions. 展开更多
关键词 CI CF The CO2 laser-induced radical-chain reactions between CH3CF2H and chlorine-atom donors CF2ClCFCl2 cf3ccl3 CFCl3 or CF2Cl2 CO CH Cl
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