六正丁基二锡是一种有机金属盐类化合物,在医药化工领域具有广泛的应用。
应用六正丁基二锡可用于制备芳基三正丁基锡,也可用于制备一种不结垢可交联的硅烷接枝聚烯烃绝缘材料。
合成方法将1,4-二氟苯(0.042克,0.364毫摩尔)和三丁基(乙烯基)锡(0.288克,0.910毫摩尔)溶解在甲苯中,加入PiPr3(0.0058克,0.036毫摩尔)与Ni(COD)2(0.005克,0.018毫摩尔)的混合物。将溶液在80℃下加热72小时。通过二氧化硅过滤反应混合物,除去溶剂,留下无色油状物六正丁基二锡。经NMR光谱分析得到产率为10%。1H NMR(C6D6,25°C,300.13 MHz):δ0.85(t,9H,SnCH2CH2CH2CH3,3JHH=6.8 Hz);1.09(m,6H,SnCH2,3JHH=8.5 Hz);1.3(m,6H,SnCH2CH2CH2);1.55(m,6H,SnCH2CH2)。
Reaction of bromo- or iodo-substituted isatoic anhydrides with N-methylglycine, L-proline or D-proline afforded bromo- or iodo-substituted 1,4-benzodiazepinediones which on condensation with ethyl or t-butyl isocyanoacetates gave ethyl or t-butyl bromo- or iodo-imidazobenzodiazepine carboxylates. These aryl halides were converted into the corresponding tributylstannanes with bis(tributyltin) in the presence of (triphenylphosphine)palladium(0), and the stannanes were treated with sodium (123I)iodide in the presence of chloramine-Tto give the required 123I- labelled analogues of the imidazobenzodiazepine receptor ligands flumazenil and bretazenil.