Alkyl Triarylstannanecarbodithioates: Synthesis, Crystal Structures, and Efficiency in RAFT Polymerization
作者:Ihor Kulai、Nathalie Saffon-Merceron、Zoia Voitenko、Stéphane Mazières、Mathias Destarac
DOI:10.1002/chem.201703412
日期:2017.11.13
alkyl triarylstannanecarbodithioates were synthesized starting from the corresponding triarylstannyl chlorides. They were fully characterized by IR and 1H, 13C, and 119Sn NMR spectroscopy and mass spectrometry. Their solid‐state structures and geometric parameters were determined and compared to those of other classes of thiocarbonylthio compounds. These new organotin derivatives are efficient reversible
从相应的三芳基锡烷基氯开始合成八种烷基三芳基锡烷基碳二硫代酸酯。通过IR和1 H,13 C和119 Sn NMR光谱学和质谱法对它们进行了充分表征。确定了它们的固态结构和几何参数,并将其与其他类别的硫代羰基硫代化合物进行了比较。这些新的有机锡衍生物是用于苯乙烯(St)和丙烯酸正丁酯(BA)的可逆加成-断裂链转移(RAFT)聚合的有效可逆链转移剂,其数均分子量和分散度(Ð)可控<1.3)。在某些情况下,通过119 Sn NMR光谱观察副产物可以证明并控制了聚合反应的丧失。这种现象归因于Sn-RAFT端子组的热不稳定性。