Synthesis of Some C2-Symmetric Bidentate Ligands and Their Complexes Derived from Feist's Acid
作者:Abdullah M. A. Al-Majid、Zeid A. Al-Othman、Mohammad Shahidul Islam
DOI:10.1002/hlca.201100305
日期:2012.2
Various new C2‐symmetric bidentate ligands, bearing phosphorus, nitrogen, and sulfur, were obtained in an efficient manner, starting from (±)‐trans‐3‐methylidenecyclopropane‐1,2‐dicarboxylic acid (Feist's acid; (±)‐trans‐3). The structures of the new bidentate ligands, di(tert‐butyl) (±)‐[(trans‐3‐methylidenecyclopropane‐1,2‐diyl)dimethanediyl]biscarbamate ((±)‐9), (±)‐(trans‐3‐methyldienecyclopropane‐1
各种新Ç 2 -对称二齿配体,轴承磷,氮和硫,进行了以有效的方式获得,由(±) -反式-3- methylidenecyclopropane -1,2-二羧酸(Feist的的酸;(± ) -反式- 3)。新的二齿配体的结构,二(叔丁基)(±) - [(反式-3- methylidenecyclopropane -1,2-二基)dimethanediyl]双氨基甲酸酯((±) - 9),(±) - (反式- 3-甲基二烯环丙烷-1,2-二基)二甲基二氯化铵((±)-10),(±)-S,S '- [(反式-3-(3-亚甲基环丙烷-1,2-二基)二甲烷二基]二乙硫醇酯((±)-11)和(±)-((反-3--亚甲基环丙烷-1,2-二基)二甲烷二基]双(二苯基膦)((± )‐ 12)已通过标准光谱技术进行了充分表征。这些新型的C 2对称双齿配体具有用于不对称催化的潜力。