作者:Roger Bolton、Raphael S. Mguni、Gareth H. Williams
DOI:10.1039/p29860000405
日期:——
following diazotisation and loss of nitrogen is determined by the nature of the intermediates formed. Where aryl radical intermediates are formed, the selectivity parallels that found in intermolecular competition by phenyl radicals, whereas copper-catalysed decomposition of the diazonium ion leads to intermediates which seem, from their selectivity, to possess considerable cationic nature. The slower thermal
合成了六种新的2-氨基三苯基甲醇(1)的不对称取代衍生物。重氮化和氮损失后的闭环方向取决于所形成的中间体的性质。在形成芳基自由基中间体的情况下,选择性与在苯基分子间竞争中发现的平行,而铜催化的重氮离子的分解导致中间体从其选择性看来似乎具有相当大的阳离子性质。重氮离子的较慢的热分解出乎意料地显示出很小的选择性,表明静电相互作用在决定关键中间体的非常短的寿命中占主导地位。