以α,ω-二溴代烷、丁基咪唑和三丁基膦为原料经过二步反应合成了3种Bola型非对称阳离子表面活性剂。中间体1-（12-溴十二烷基）-3-丁基咪唑溴盐的较佳合成工艺条件为：n（丁基咪唑）∶n（1,12-二溴十二烷）∶n（四丁基碘化铵）=1∶1.5...以α,ω-二溴代烷、丁基咪唑和三丁基膦为原料经过二步反应合成了3种Bola型非对称阳离子表面活性剂。中间体1-（12-溴十二烷基）-3-丁基咪唑溴盐的较佳合成工艺条件为：n（丁基咪唑）∶n（1,12-二溴十二烷）∶n（四丁基碘化铵）=1∶1.5∶0.005,异丙醇作溶剂,反应温度65℃,反应时间6 h;Bola型表面活性剂的合成工艺条件为：n（1-（12-溴十二烷基）-3-丁基咪唑溴盐）∶n（三丁基膦）=1.05∶1,微波辅助反应,反应温度80℃,反应时间12 h。所合成的Bola型表面活性剂表现出了优良的表面活性,30℃时cmc在5.7×10^-3～8.7×10^-2mol·L^-1之间、γcmc在30～36 m N·m^-1之间;随着碳链长度的增长,其cmc,γ_cmc及分子最小横截面积（A_min）逐渐减小,饱和吸附量（Γ_max）和吸附效率（pc_20）逐渐增大。展开更多
A stereoselective and effective method for the synthesis of vinyl thioethers has been developed.This method is based on the Michael addition of ethanethiol to various alkynyl ketones using 10 mol%of tributylphosphine ...A stereoselective and effective method for the synthesis of vinyl thioethers has been developed.This method is based on the Michael addition of ethanethiol to various alkynyl ketones using 10 mol%of tributylphosphine as catalyst.Most of alkynyl ketones react with ethanethiol in this system to yield mainly Z-isomer of vinyl thioether adducts,only in one case mainly E-isomer of vinyl thioether adducts was observed.展开更多
2-Phenyl-3-thioformylindolizine and 1,2-dimethyl-3-thioformylindolizine undergo a novel desulfur coupling reaction in the presence of tributylphosphine to give （E）-1,2-bis（3-indolizinyl）ethenes in high yields. The...2-Phenyl-3-thioformylindolizine and 1,2-dimethyl-3-thioformylindolizine undergo a novel desulfur coupling reaction in the presence of tributylphosphine to give （E）-1,2-bis（3-indolizinyl）ethenes in high yields. The structures of products were confirmed by IR, ^1H NMR, MS, elemental analysis and single crystal X-ray diffraction analysis. The mechanisms involved in various stages of the reaction were discussed.展开更多
文摘以α,ω-二溴代烷、丁基咪唑和三丁基膦为原料经过二步反应合成了3种Bola型非对称阳离子表面活性剂。中间体1-（12-溴十二烷基）-3-丁基咪唑溴盐的较佳合成工艺条件为：n（丁基咪唑）∶n（1,12-二溴十二烷）∶n（四丁基碘化铵）=1∶1.5∶0.005,异丙醇作溶剂,反应温度65℃,反应时间6 h;Bola型表面活性剂的合成工艺条件为：n（1-（12-溴十二烷基）-3-丁基咪唑溴盐）∶n（三丁基膦）=1.05∶1,微波辅助反应,反应温度80℃,反应时间12 h。所合成的Bola型表面活性剂表现出了优良的表面活性,30℃时cmc在5.7×10^-3～8.7×10^-2mol·L^-1之间、γcmc在30～36 m N·m^-1之间;随着碳链长度的增长,其cmc,γ_cmc及分子最小横截面积（A_min）逐渐减小,饱和吸附量（Γ_max）和吸附效率（pc_20）逐渐增大。
基金support from National Natural Science Foundation of China(No.30973609)
文摘A stereoselective and effective method for the synthesis of vinyl thioethers has been developed.This method is based on the Michael addition of ethanethiol to various alkynyl ketones using 10 mol%of tributylphosphine as catalyst.Most of alkynyl ketones react with ethanethiol in this system to yield mainly Z-isomer of vinyl thioether adducts,only in one case mainly E-isomer of vinyl thioether adducts was observed.
基金Project supported by the National Natural Science Foundation of China （No. 20672090）, the Natural Science Foundation of Jiangsu Education Department （No. 06KJD150015）, the Key Laboratory of Marine Biotechnology Foundation of Jiangsu Province （No. 2006HS014） and the Hualhai Institute of Technology Disciplinary Construction Foundation （No. XK200309）.
文摘2-Phenyl-3-thioformylindolizine and 1,2-dimethyl-3-thioformylindolizine undergo a novel desulfur coupling reaction in the presence of tributylphosphine to give （E）-1,2-bis（3-indolizinyl）ethenes in high yields. The structures of products were confirmed by IR, ^1H NMR, MS, elemental analysis and single crystal X-ray diffraction analysis. The mechanisms involved in various stages of the reaction were discussed.
