作者:T. A. Yangirov、A. A. Fatykhov、E. A. Sedova、N. G. Gileva、R. R. Khafizova、E. S. Meshcheryakova、L. M. Khalilov、V. A. Kraikin
DOI:10.1134/s1070428019050142
日期:2019.5
3′-diaryl-3,3′-diphthalides by dehalogenation of o-keto carboxylic acid pseudochlorides is implemented. The feature of the new protocol is that the reaction is carried out in the presence of a zero-valent nickel complex catalyst generated in situ by mixing zinc powder, nickel(II) chloride, triphenylphosphine, and 2,2′-bipyridine. Along with the target dimerization products of pseudochlorides, minor products were
实施了通过邻-酮羧酸假氯化物的脱卤合成3,3'-二芳基-3,3'-二邻苯二甲酸酯的新方案。新方案的特征是该反应在零价镍络合物催化剂的存在下进行,该催化剂是通过混合锌粉,氯化镍(II),三苯基膦和2,2'-联吡啶而现场生成的。连同假氯化物的目标二聚产物一起,分离出次要产物,其结构允许提出可能的副反应方案。