175464-51-4Relevant articles and documents
Novel unsymmetrical PCP′ pincer ligands and their palladium(II) complexes
Eberhard, Michael R.,Matsukawa, Shiro,Yamamoto, Yohsuke,Jensen, Craig M.
, p. 185 - 189 (2003)
Synthetic routes towards novel PCP′ pincer ligands were devised. Ligand 1-(Pr2iPOCH2) -3-(Bu2tPCH2) (C6H4) is prepared in a three step synthesis from 1,3-benzenedimethanol and 1-(Pr2iPO)-3- (Bu2tPCH2)(C6H4) is accessible in three steps from 3-hydroxybenzylalcohol. Both their palladium(II) complexes are prepared in good yields but are distinctly different since [PdCl{(C6H3) (OPPr2i)-2-(CH2PBu2 t)-6}] possesses two five-membered palladacycles, whereas [PdCl{(C6H3)(CH2PBu2 t)-2-(CH2OPPr2i)-6}] is unusual for a pincer complex in that it contains both five- and six-membered palladacycles. Both compounds also represent the first examples of pincer complexes where one donor is a phosphinite and the other is a phosphine. The X-ray structures of these complexes were solved and are discussed. The data reveal that an increase in the metallacycle ring-size leads to changes in bond lengths, but more importantly to significant increases in the bond angles.
Highly chemo- and regio-selective hydroxylations of o- and m-substituted toluenes to benzyl alcohols with Cellulosimicrobium cellulans EB-8-4
Dai, Shiyao,Wu, Jinchuan,Wang, Zunsheng,Chen, Yongzheng,Li, Zhi
experimental part, p. 6919 - 6923 (2010/09/18)
Highly chemo- and regio-selective benzylic hydroxylations of o- and m-substituted toluenes were achieved with the easily available and easy-to-handle resting cells of Cellulosimicrobium cellulans EB-8-4 as biocatalysts, giving the corresponding benzyl alcohols as single product. Benzyl alcohols were obtained in 78-94% yield, demonstrating the first green, clean, and simple method for the preparation of benzyl alcohols via hydroxylations. Biotransformation of 4-methylbenzyl chloride with the same strain gave 4-methylbenzyl alcohol in 67-81% yield, suggesting a novel dehalogenation activity of the cells and providing a novel, green, and efficient method for the preparation of 4-methylbenzyl alcohol as well as the application potential in biodegradation of chlorine-containing aromatics.
Synthesis and resolution of planar-chiral ruthenium-palladium complexes with ECE' pincer ligands
Bonnet, Sylvestre,Li, Jie,Siegler, Maxime A.,Von Chrzanowski, Lars S.,Spek, Anthony L.,Van Koten, Gerard,Klein Gebbink, Robertus J. M.
supporting information; scheme or table, p. 3340 - 3343 (2009/12/27)
The synthesis and chiral resolution of the first planar-chiral ECE'-metal complexes of type e was reported. n1-coordination of the metal (M) was carried out first, followed by n6 of a second metal fragment (M'). The ECE'-palladium co
