Synthesis of N,P-, S,P-, P,P- and S,P,S-ligands using reactions of cyclopalladated complexes with KPPh2
作者:Nicholas J. Korte、Valeria A. Stepanova、Irina P. Smoliakova
DOI:10.1016/j.jorganchem.2013.07.078
日期:2013.11
CP-cyclopalladated complexes with the (sp2)C–Pd bond react with 4.5 equiv. of KPPh2 in THF to give the corresponding P,N-, P,S- and P,P-bidentate ligands in 35–63% yield. The phosphination method is applicable to five- and six-membered palladacycles derived from (S)-N,N-dimethyl-1-phenylethylamine, (S)-4-tert-butyl-2-phenyl-2-oxazoline, benzyl methyl sulfide, benzyldiphenylphosphine, 2-benzylpyridine and N,N
易于获得的具有(sp 2)C–Pd键的空气和湿气稳定的二聚氯桥CN-,CS-和CP-环钯配合物可与4.5当量反应。用THF中的KPPh 2生成相应的P,N-,P,S-和P,P-双齿配体,产率为35-63%。该phosphination方法适用于五元和由(衍生六元钯环小号) - ñ,ñ -二甲基- 1-苯基乙胺,(小号)-4-叔-丁基-2-苯基-2-恶唑啉,苄基甲基硫醚,苄基二苯基膦,2-苄基吡啶和N,N-二甲基联苯-2-胺。反应1.2当量。用由1,3-双(甲硫基甲基)苯制得的SCS-钳形环钯配合物制备的KPPh 2,以49%的收率提供了相应的S,P,S-三齿配体。