133598-07-9Relevant academic research and scientific papers
Highly Selective Hydroboration of Alkenes, Ketones and Aldehydes Catalyzed by a Well-Defined Manganese Complex
Zhang, Guoqi,Zeng, Haisu,Wu, Jing,Yin, Zhiwei,Zheng, Shengping,Fettinger, James C.
, p. 14369 - 14372 (2016)
Well-defined manganese complexes based on inexpensive, readily available ligands, 2,2′:6′,2′′-terpyridine and its derivatives have been prepared and employed for the selective hydroboration of alkenes, ketones and aldehydes. Highly Markovnikov regioselective hydroboration of styrenes as well as excellent chemoselective hydroboration of ketones over alkenes were achieved, for the first time, by an earth-abundant manganese catalyst.
Mononuclear manganese(II)/4′-Ar-2,2′:6′,2″-terpyridine complexes: Synthesis, characterization, and olefins oxidation study
Liu, Bingqing,Luo, Wei,Li, Haixia,Qi, Xiaoyun,Hu, Quanyuan
, p. 1097 - 1101 (2015/04/14)
A series of mononuclear Mn(II)/terpyridine complexes were synthesized and characterized by elemental analysis, IR spectrum, and UV-vis spectrum. Catalytic activities of Mn(II)/4′-Ar-2,2′:6′,2″-terpyridine complexes were tested in the oxidation of cyclohexene or styrene in the presence of tert-butylhydroperoxide as oxidant. Significant catalytic effects of these complexes were observed in the oxidation of olefins, especially in the cyclo-oxidation of styrene.
General synthesis of Di-μ-oxo dimanganese complexes as functional models for the oxygen evolving complex of photosystem II
Chen, Hongyu,Tagore, Ranitendranath,Das, Siddhartha,Incarvito, Christopher,Faller,Crabtree, Robert H.,Brudvig, Gary W.
, p. 7661 - 7670 (2008/10/09)
A series of complexes with the formula [MnIII/IV 2(μ-O)2(L)2(X)2]3+ have been prepared in situ from MnIILCl2 precursors by a general preparative method (L = terpy, Cl-terpy, Br-terpy, Ph-terpy, tolyl-terpy, mesityl-terpy, tBu3-terpy, EtO-terpy, py-phen, dpya, Me2N-terpy, or HO-terpy, and X = a labile ligand such as water, chloride, or sulfate). The parent complex, where L = terpy and X = water, is a functional model for the oxygen-evolving complex of photosystem II (Limburg, et al. J. Am. Chem. Soc. 2001, 123, 423-430). Crystals of MnII(dpya) Cl2, MnII(Ph-terpy)-Cl2, Mn II(mesityl-terpy)Cl2, and an organic-soluble di-μ-oxo di-aqua dimanganese complex, [MnIII/IV2(μ-O) 2(mesityl-terpy)2(OH2)2](NO 3)3, were obtained and characterized by X-ray crystallography. Solutions of the in situ-formed di-μ-oxo dimanganese complexes were characterized by electrospray mass spectrometry, EPR spectroscopy, and UV-visible spectroscopy, and the rates of catalytic oxygen-evolving activity were assayed. The use of MnIILCl2 precursors leads to higher product purity of the Mn dimers while achieving the 1:1 ligand to Mn stoichiometry appropriate for catalytic activity assay. These methods can be used to screen the catalytic activity of other di-μ-oxo dimanganese complexes generated by using a ligand library.
