Highly Efficient Copper‐Mediated Atom‐Transfer Radical Addition (ATRA) in the Presence of Reducing Agent
作者:William T. Eckenhoff、Sean T. Garrity、Tomislav Pintauer
DOI:10.1002/ejic.200701144
日期:2008.2
(TPMA)Br][Br] complexes in ATRA reactions of polybrominated compounds to alkenes in the presence of reducing agent (AIBN) was reported. [Cu II (TPMA)Br][Br], in conjunction with AIBN, effectively catalyzed ATRA reactions of CBr 4 and CHBr 3 to alkenes with concentrations between 5 and 100 ppm, which is the lowest number achieved in copper-mediated ATRA. The molecular structure of Cu I (TPMA)Br indicated that
Cu I (TPMA)Br [TPMA = tris(2-pyridylmethyl)amine] 和 [Cu II (TPMA)Br][Br] 配合物在多溴化合物与烯烃的 ATRA 反应中的合成、表征和特殊活性还原剂(AIBN)的报道。[Cu II (TPMA)Br][Br] 与 AIBN 结合,有效地催化 CBr 4 和 CHBr 3 生成烯烃的 ATRA 反应,浓度在 5 到 100 ppm 之间,这是在铜介导的 ATRA 中达到的最低值。Cu I (TPMA)Br 的分子结构表明,由于 TPMA [Cu I -N: 2.1024(15), 2.0753(15), 2.0709(15) 和 2.4397 (14) A] 和溴化物阴离子连接到铜 (I) 中心 [CU I -Br 2.5088(3) A]。变温 1 H NMR 和循环伏安法研究证实了 Cu I (TPMA)Br 和 [Cu
Structural Comparison of Copper(I) and Copper(II) Complexes with Tris(2-pyridylmethyl)amine Ligand
作者:William T. Eckenhoff、Tomislav Pintauer
DOI:10.1021/ic1016142
日期:2010.11.15
Copper(I) complexes with the tris(2-pyridylmethyl)amine (TPMA) ligand were synthesized and characterized to examine the effect of counteranions (Br−, ClO4−, and BPh4−), as well as auxiliary ligands (CH3CN, 4,4′-dipyridyl, and PPh3) on the molecular structures in both solid state and solution. Partial dissociation of one of the pyridyl arms in TPMA was not observed when small auxiliary ligands such