作者:Alan Katritzky、Dmytro Fedoseyenko、Prabhu Mohapatra、Peter Steel
DOI:10.1055/s-2008-1032186
日期:2008.3
The orientations of the reactions of p-benzoquinone with nucleophiles are discussed. The one-pot reaction of p-benzoquinone with alkanethiols gave the 2-, 2,6-, and 2,5-conjugate addition products. Novel 2,6- and 2,5-bis(alkylsulfanyl)-, 2,3,5-tris(alkylsulfanyl)-, and 2,3,5,6-tetrakis(alkylsulfanyl)-p-benzoquinones, and their corresponding hydroquinones, were obtained in good yields through a sequential addition/in situ oxidation protocol for further testing as polymerization inhibitors in rubber and petroleum products. The structures of five 2,5- and 2,6-disubstituted isomers were established by X-ray crystallography.
讨论了对称对苯醌与亲核试剂反应的取向。对苯醌与烷基硫醇的一锅反应生成了2-、2,6-和2,5-连接加成产物。通过顺序加成/原位氧化法获得了新颖的2,6-和2,5-双(烷基硫基)-、2,3,5-三(烷基硫基)-和2,3,5,6-四(烷基硫基)-对苯醌及其相应的氢醌,收率良好,进一步用于测试作为橡胶和石油产品的聚合抑制剂。通过X射线晶体学确定了五种2,5-和2,6-二取代异构体的结构。