Efficient Generation of Singlet Oxygen and Photooxidation of Sulfide into Sulfoxide via Tuning the Ancillary of Bicyclometalated Iridium(III) Complexes
作者:Li-Ping Li、Bao-Hui Ye
DOI:10.1021/acs.inorgchem.9b00220
日期:2019.6.17
The influence of the metal-based highest occupied molecular orbital on triplet-state lifetime, triplet-state quantum yield, and 1O2 generation quantum yield as well as aerobic photo-oxidation of sulfide into sulfoxide was evaluated via tuning the ancillaryligand of Ir(pq)2 complexes. The results revealed that 1h with chelate ancillaryligandbearing electron-donating group possesses a high 1O2 generation
以2-苯基喹啉(pq)为环金属化配体,一系列阳离子Ir(III)络合物[Ir(pq)2(L1)2 ](PF 6)(L1为吡啶(1a),4-甲氧基吡啶(1b) ,4-二甲基氨基吡啶(1c)和4-乙酰基吡啶(1d))和[Ir(pq)2(L2)](PF 6)(L2是2,2'-联吡啶(1e),2,2'-联嘧啶基(1f),4,4'-二甲基-2,2'-联吡啶(1g)和4,4'-二甲氧基-2,2'-联吡啶(1h))进行合成和表征。通过调节Ir的辅助配体,评估了金属基最高占据分子轨道对三重态寿命,三重态量子产率和1 O 2代量子产率以及有氧光氧化硫化物成亚砜的影响。 (pq)2个配合物。结果表明,螯合辅助配体带有给电子基团的1h具有较高的1 O 2。在温和条件下具有高的化学选择性和低的催化剂负载量(0.5 mol%)时产生的量子产率(0.90)和对硫化物氧化的光催化活性。此外,还开发了一锅两步制备对映纯亚
Enantioselective Syntheses of Sulfoxides in Octahedral Ruthenium(II) Complexes via a Chiral-at-Metal Strategy
作者:Zheng-Zheng Li、A-Hao Wen、Su-Yang Yao、Bao-Hui Ye
DOI:10.1021/ic502898e
日期:2015.3.16
Λ-[Ru(bpy)2(py)2]2+ with the prochiral thioether ligands 2-(alkylthio)phenol (HL-R), followed by enantioselective oxidation with m-CPBA as oxidant. The X-ray crystallography was used to verify the stereochemistry of ruthenium complexes and sulfur atoms. The configurations of the ruthenium complexes are stable during the coordination and oxidation reactions. Moreover, the chiral sulfoxide ligands are enantioselectively
Chiral Recognition and Dynamic Thermodynamic Resolution of Sulfoxides by Chiral Iridium(III) Complexes
作者:Su-Yang Yao、Xing-Yang Chen、Yan-Ling Ou、Bao-Hui Ye
DOI:10.1021/acs.inorgchem.6b02494
日期:2017.1.17
sulfoxides 2-(alkylsulfinyl)phenol (HLO-R, R = Me, Et, iPr, and Bn) rather than (S)-configuration sulfoxides under thermodynamic equilibrium due to the hydrogen-bonding interaction and the differences in the steric interference, and thus act as a highly efficient enantioreceptor for resolution of sulfoxide enatiomers. Treatment of Λ-[Ir(ppy)2(MeCN)2](PF6) with 2 equiv of rac-HLO-R offered (S)-HLO-R in yields
Isomerization-Induced Asymmetric Coordination Chemistry: From Auxiliary Control to Asymmetric Catalysis
作者:Lei Gong、Zhijie Lin、Klaus Harms、Eric Meggers
DOI:10.1002/anie.201003139
日期:2010.10.18
Asymmetric generator: Chiral (S)‐2‐(isopropylsulfinyl)phenol and a more electron‐rich methoxy derivative (R=OCH3) are capable of inducing and even catalyzing a chirality‐generating trans–cis isomerization of two 2,2′‐bipyridine ligands in an octahedral coordination sphere of a rutheniumcomplex.
不对称发生器:手性(S)-2-(异丙基亚硫酰基)苯酚和电子含量更高的甲氧基衍生物(R = OCH 3)能够诱导甚至催化两个2,2'-的手性生成反式-顺式异构化钌配合物的八面体配位域中的联吡啶配体。