180845-47-0Relevant academic research and scientific papers
Aminoacid-derivatized Cu (II) complexes: Synthesis, DNA interactions and in vitro cytotoxicity
Singh, Rinky,Devi, P. Rama,Jana, Sharmita S.,Devkar, Ranjitsinh V.,Chakraborty, Debjani
, p. 157 - 169 (2017)
Two different series of copper complexes, [Cu(MFL)(FcAA)H2O] (C1-C4) and [Cu(MFL) (BzAA)H2O] (C5-C8), where FcAA = ferrocenyl amino acid mannich base conjugates and BzAA = benzaldehyde amino acid mannich base conjugates have been syn
Palladium-catalyzed allylic cross-coupling reactions of primary and secondary homoallylic electrophiles
Stokes, Benjamin J.,Opra, Susanne M.,Sigman, Matthew S.
, p. 11408 - 11411 (2012/09/05)
The Pd(0)-catalyzed allylic cross-coupling of homoallylic tosylate substrates using boronic acids and pinacol esters is reported. The reaction uses 2-(4,5-dihydro-2-oxazolyl)quinoline (quinox) as a ligand and is performed at ambient temperature. The scope of the reaction is broad in terms of both the boronate transmetalating reagent and the substrate and includes secondary tosylates. Mechanistic studies support an alkene-mediated SN2-type stereoinvertive oxidative addition of unactivated primary and secondary alkyl tosylates.
Structural requirements for substrate in highly enantioselective hydrogenation over the cinchonidine-modified Pd/C
Sugimura, Takashi,Uchida, Takayuki,Watanabe, Junya,Kubota, Takeshi,Okamoto, Yasuaki,Misaki, Tomonori,Okuyama, Tadashi
experimental part, p. 57 - 64 (2009/06/17)
Relationship between substrate structure and enantioselectivity is studied for the asymmetric hydrogenation of 42 different (E)-α, β-disubstituted acrylic acids (propenoic acids) over cinchonidine-modified Pd/C. The β-phenyl group is indispensable for high enantioselectivity of α-phenylcinnamic acid (2,3-diphenylpropenoic acid, 81% ee), and substitution on this group affects markedly the selectivity. The high ee up to 92% was achieved by the β - p-alkoxyphenyl substitution, and the selectivity is ascribed mainly to stronger interaction of the substrate with the chiral modifier on the catalyst surface. In contrast, substitution on the α-phenyl group does not affect notably the enantioselectivity (80-82% ee) or even the α-phenyl group itself is not indispensable but replaceable with a properly bulky group for the high enantioselectivity.
