Metal-Free Addition/Head-to-Tail Polymerization of Transient Phosphinoboranes, RPH-BH2: A Route to Poly(alkylphosphinoboranes).
Metal-Free Addition/Head-to-Tail Polymerization of Transient Phosphinoboranes, RPH-BH2: A Route to Poly(alkylphosphinoboranes).
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DOI：
10.1002/anie.201507084
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发表时间：
2015-11-09
期刊：
影响因子：
--
通讯作者：
Scheer M
中科院分区：
文献类型：
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作者：
Marquardt C;Jurca T;Schwan KC;Stauber A;Virovets AV;Whittell GR;Manners I;Scheer M
刘易斯碱稳定的膦基硼烷单体R1 R2 P-BH 2-NMe 3（R1、R2=H、Ph或tBu/H）在室温至100 °C的温和热处理提供了制备低聚和聚膦基硼烷[R1 R2 P-BH 2]n的方便的新途径。聚合似乎通过短寿命游离膦基硼烷单体R1 R2 P-BH 2的加成/头-尾聚合进行。该方法提供了获得高摩尔质量材料的途径，例如聚（叔丁基膦基硼烷），其目前使用其他途径（例如催化脱氢偶联）无法获得。
Mild thermolysis of Lewis base stabilized phosphinoborane monomers R1R2P–BH2⋅NMe3 (R1,R2=H, Ph, or tBu/H) at room temperature to 100 °C provides a convenient new route to oligo- and polyphosphinoboranes [R1R2P-BH2]n. The polymerization appears to proceed via the addition/head-to-tail polymerization of short-lived free phosphinoborane monomers, R1R2P-BH2. This method offers access to high molar mass materials, as exemplified by poly(tert-butylphosphinoborane), that are currently inaccessible using other routes (e.g. catalytic dehydrocoupling).