41013-30-3Relevant articles and documents
Salen-Ti(OR)4 complex catalysed trimethylsilylcyanation of aldehydes
Jiang, Yaozhong,Gong, Liuzhu,Feng, Xiaoming,Hu, Wenhao,Pan, Weidong,Li, Zhi,Mi, Aiqiao
, p. 14327 - 14338 (1997)
Chiral selen-titanium complexes were found to be efficient catalysts for the enantioselective trimethylsilylcyanation of aldehydes. An enantioselectivity up to 87.1% e.e, was obtained by using 10mol% Ti(IV)-salen 2d as catalyst. The reaction mechanism was
Three-Way Chemoselectivity Switching through Coupled Equilibria
Puangsamlee, Thamon,Miljani?, Ognjen ?.
supporting information, p. 5900 - 5904 (2020/08/05)
Controlling the chemoselectivity of reactions operating on complex mixtures, including those found in biological and petrochemical feedstocks or in the primordial soup from which life emerged, is generally challenging. The selectivity of imine oxidation c
Palladium (II)–Salan Complexes as Catalysts for Suzuki–Miyaura C–C Cross-Coupling in Water and Air. Effect of the Various Bridging Units within the Diamine Moieties on the Catalytic Performance
Bunda, Szilvia,Joó, Ferenc,Kathó, ágnes,Udvardy, Antal,Voronova, Krisztina
, (2020/09/18)
Water-soluble salan ligands were synthesized by hydrogenation and subsequent sulfonation of salens (N,N’-bis(slicylidene)ethylenediamine and analogues) with various bridging units (linkers) connecting the nitrogen atoms. Pd (II) complexes were obtained in reactions of sulfosalans and [PdCl4]2?. Characterization of the ligands and complexes included extensive X-ray diffraction studies, too. The Pd (II) complexes proved highly active catalysts of the Suzuki–Miyaura reaction of aryl halides and arylboronic acid derivatives at 80 ?C in water and air. A comparative study of the Pd (II)–sulfosalan catalysts showed that the catalytic activity largely increased with increasing linker length and with increasing steric congestion around the N donor atoms of the ligands; the highest specific activity was 40,000 (mol substrate) (mol catalyst × h)?1. The substrate scope was explored with the use of the two most active catalysts, containing 1,4-butylene and 1,2-diphenylethylene linkers, respectively.