Selective Preparation of Sterically Encumbered Diaryltin Dihalides from Grignard Reagents via Salt Metathesis and Halide Exchange
作者:Beate G. Steller、Roland C. Fischer
DOI:10.1002/ejic.201900180
日期:2019.6.10
A general route for the selective preparation of diaryltin dichlorides, dibromides, and diiodides from readily accessible but sterically demanding, 2,6‐disubstituted or 2,4,6‐trisubstituted aryl Grignard reagents ArylMgBr and tin tetrachloride was developed. During work‐up, the initially obtained mixture of halides is converted into a single species. The thus obtained diaryltin dichlorides were reacted
开发了从容易获得但空间要求高的2,6-二取代或2,4,6-三取代芳基格氏试剂ArylMgBr和四氯化锡选择性制备二氯化二芳基锡,二溴化物和二碘化物的一般方法。在后处理过程中,最初获得的卤化物混合物被转化为单一物质。使如此获得的二芳基二氯化锡反应以生成二氢化物芳基2 SnH 2。这些具有高的热稳定性和中等的耐氧性。