Synthesis and structures of (−) menthyl and (+) neomenthyl substituted enantio pure bis(1,2,3-triazol-5-ylidene)PdI 2 complexes and PEPPSI type (1,2,3-triazol-5-ylidene) (pyridine)PdI 2 complexes. Comparison of catalytic activities for C–C coupling
作者:Arumugam Mohan、Venkatachalam Ramkumar、Sethuraman Sankararaman
DOI:10.1016/j.jorganchem.2015.09.019
日期:2015.12
as precursors for the synthesis of the corresponding enantio pure bis(1,2,3-triazol-5-ylidene)PdI2 complexes with menthyl and neomenthyl wing tip groups. The palladium complexes were synthesized in high yields using a recently developed mild method under base free and silver free conditions at ambient temperature. These triazolium salts also served as precursors for the synthesis of the corresponding
(-)将薄荷醇在四个步骤中转化为1-薄荷基-3-甲基-4-苯基碘化三碘鎓和1-新甲基-3-甲基-4-苯基碘化三碘鎓。这些对映体纯的但非对映异构体的三唑鎓盐用作合成具有薄荷基和新薄荷基翼尖基团的相应对映体纯的双(1,2,3-三唑-5亚烷基)PdI 2络合物的前体。使用最新开发的温和方法,在环境温度下在无碱和无银的条件下以高收率合成钯配合物。这些三唑鎓盐还用作合成相应的对映体纯PEPPSI型(1,2,3-三唑-5-亚烷基)(吡啶)PdI 2的前体。复合体。通过光谱学和单晶XRD数据对所有配合物进行了彻底表征。比较了这些配合物的相对催化活性对铃木-宫浦CC偶联的影响。