作者:Srood O. Rashid、Sultan S. Almadhhi、David J. Berrisford、James Raftery、Inigo Vitorica-Yrezabal、George Whitehead、Peter Quayle
DOI:10.1016/j.tet.2019.03.015
日期:2019.4
promotor in the radical Truce-Smiles reactions of 2-(((3,5-dimethylisoxazol-4-yl)sulfonyl)oxy)benzenediazonium salts has been investigated in detail. During these reactions the desired Truce-Smiles rearrangement (via an ipso-substitution reaction) is accompanied by the formation of a number of by-products including dihydrobenzo[5,6][1,2]oxathiino[3,4-d]isoxazole 4,4-dioxides, dioxidobenzo[e][1,2]ox
已详细研究了TiCl 3 -HCl作为促进剂在2-((((3,5-二甲基异恶唑-4-基)磺酰基)氧基)苯重氮盐的自由基Truce-Smiles反应中的应用。在这些反应中所期望的休战-斯迈尔斯重排(经由一个本位3'-取代反应)伴有一些副产物的形成,包括二氢苯并[5,6] [1,2] oxathiino [3,4 d ]异恶唑4,4-二氧化物,二氧化苯并[e] [1,2]草athinin-3-基)乙烷-1-酮,苯胺和氯代芳烃。用Cu(NO 3)2 -Cu 2代替TiCl 3 -HCl发现在这些反应中作为还原剂的O提供了大致可比的产物分布。竞争和自由基钟实验也提供了异恶唑核对芳基自由基攻击的相对敏感性的指示。