The reaction rate of a catalyzed reaction is faster than the reaction rate of the uncatalyzed reaction at the same temperature. Recommanded Product: (4S,4S)-2,2-(Propane-2,2-diyl)bis(4-phenyl-4,5-dihydrooxazole), 131457-46-0, Name is (4S,4S)-2,2-(Propane-2,2-diyl)bis(4-phenyl-4,5-dihydrooxazole), SMILES is CC(C1=N[C@@H](C2=CC=CC=C2)CO1)(C3=N[C@@H](C4=CC=CC=C4)CO3)C, in an article , author is Chakraborty, Tonmoy, once mentioned of 131457-46-0.
A combined experimental and theoretical rationalization of an unusual zinc(ii)-mediated conversion of 18-membered Schiff-base macrocycles to 18-membered imine-amine macrocycles with imidazolidine side rings: an investigation of their bio-relevant catalytic activities
The 2 : 2 condensation reaction of 2,6-diformyl-4-isopropyl phenol and N ‘-(2-aminoethyl)ethane-1,2-diamine leads to a macrocycle Schiff base ligand (H2L) with the N6O2 chromophore, which in the presence of ZnX2 transforms into a new [2+2] 18 membered macrocyclic system (H2L1) with an N4O2 chromophore and two exo-cyclic imidazolidine rings. The transformation of H2L to H2L1 in the presence of ZnX2 is unique and was confirmed by single crystal X-ray diffraction. The structural analysis reveals that the transformation generates complexes with a dinuclear Zn(ii) core connected to a ZnX3 moiety, leading to trinuclear species with the composition [Zn-3(L-1)(X)(5)](CH3OH)(H2O). The complexes (X = Cl, 1 and X = Br, 2) are also isostructural, where the central and terminal Zn atoms have different coordination geometries (trigonal-bipyramidal and tetrahedral, respectively). A probable mechanistic pathway involved in the conversion of the 18-membered imine-imine macrocycles to 18-membered imine-amine macroycles with imidazolidine excyclic rings has been established by combined experimental and theoretical investigations. Both these complexes (1 and 2) were exploited to check their phosphatase-like activity using the disodium salt of 4-nitrophenylphosphate (4-NPP) as a model substrate in a 97.5% (v/v) DMF-H2O mixture. The turnover numbers (k(cat)) of complexes 1 and 2 were calculated to be 17.905 and 14.235 s(-1), respectively. The probable mechanistic pathway has been explored via trapping the intermediate species of the catalytic cycle by ESI-MS study. On considering the efficiency of the catalyst in phospho-ester bond hydrolysis, both complexes were tested for their anticancer activities on MDA-MB-231 (human breast cancer) and HeLa (cervical cancer) cell lines, as revealed by in vitro MTT assays. The better cell killing properties of complex 1 were further evidenced with the help of cell migration inhibition studies.
But sometimes, even after several years of basic chemistry education, it is not easy to form a clear picture on how they govern reactivity! 131457-46-0, you can contact me at any time and look forward to more communication. Recommanded Product: (4S,4S)-2,2-(Propane-2,2-diyl)bis(4-phenyl-4,5-dihydrooxazole).
Reference:
Metal catalyst and ligand design,
,Ligand Template Strategies for Catalyst Encapsulation – NCBI