Search results for " nucleophilic addition"

showing 3 items of 3 documents

A DFT mechanistic study of the synthesis of trans-Z,Z-[PtIICl(NH3){HN = C(NH2)Me}2]Cl from addition of NH3 to trans-[PtIICl2(N CMe)2]

2020

Abstract The reaction mechanism between trans-[PtIICl2(N CMe)2] and ammonia to give trans-Z,Z-[PtIICl(NH3){HN = C(NH2)Me}2]Cl has been studied at DFT level. Results showed that, in dichloromethane solution at 263.15 K, the chloride substitution by the ammonia on platinum is a process kinetically more favoured than the ammonia nucleophilic addition to the nitrile of about three orders of magnitude, and hence the nucleophilic addition reaction occurs after. Finally, both nucleophilic addition steps are geometrically driven to give products in the E configuration even if the final products were experimentally observed in the Z configuration. For trans-Z,Z-[PtIICl(NH3)(N CMe)2, the isomerizatio…

KineticPlatinum complexeReaction mechanismNucleophilic additionPlatinum complexesNitrilechemistry.chemical_elementDFTMedicinal chemistryInorganic ChemistryAmidineNucleophilic substitutionchemistry.chemical_compoundDeprotonationchemistryNitrilesMaterials ChemistryNucleophilic substitutionPhysical and Theoretical ChemistryNucleophilic additionPlatinumNitrileIsomerizationDFT; Kinetic; Nitriles; Nucleophilic addition; Nucleophilic substitution; Platinum complexesInorganica Chimica Acta
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Reaction between Indazole and Pd-Bound Isocyanides-A Theoretical Mechanistic Study

2018

The mechanism of the addition of indazole (Ind)&mdash

Models Molecular3003Activation of small moleculesIndazolesisocyanideIsocyanidePharmaceutical ScienceDFT calculationProtonation010402 general chemistryDFT calculationsactivation of small molecule01 natural sciencesMedicinal chemistryArticleAnalytical Chemistrylcsh:QD241-441chemistry.chemical_compoundDeprotonationNucleophilelcsh:Organic chemistryTheoreticalModelsDrug DiscoveryNitrilesPhysical and Theoretical ChemistryMechanical PhenomenaIndazoleNucleophilic additionCyanidesMolecular Structure010405 organic chemistrynitrileDrug Discovery3003 Pharmaceutical ScienceOrganic ChemistryRegioselectivityMolecularIsocyanidesModels TheoreticalTautomer0104 chemical sciencesnucleophilic additionchemistryChemistry (miscellaneous)Settore CHIM/03 - Chimica Generale E InorganicaMolecular Medicinereaction mechanismActivation of small molecules; DFT calculations; Isocyanides; Nitriles; Nucleophilic addition; Reaction mechanism; Cyanides; Indazoles; Models Molecular; Molecular Structure; Palladium; Mechanical Phenomena; Models Theoretical; Analytical Chemistry; Chemistry (miscellaneous); Molecular Medicine; 3003; Drug Discovery3003 Pharmaceutical Science; Physical and Theoretical Chemistry; Organic ChemistryPalladium
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ELABORATION OF CURCUMIN INTO DIKETONE MODIFIED ANALOGUES DEVOID OF NUCLEOPHILIC ADDITION CAPABILITY; IMPLICATIONS FOR THEIR ANTITUMOR AND CHEMOSENSIT…

2009

Curcumin (CUR), a polyphenolic compound extracted from Curcuma longa L.,can beconsidered as a good lead compound for the design of new drugs for the treatment of cancer and other therapeutic purposes. CUR is endowed with a diketone function, which appears to be important for its antitumor activity: also depending on the dose, the compound may show complex either pro-oxidant or anti-oxidant effects, which both may, at least in part, be linked to this structural moiety. In the lower concentration, "chemopreventive", range, CUR behaves mainly as an antioxidant; at higher concentrations, the a, b-unsaturated 1,3-diketone, as a Michael acceptor, can form adducts with the –SH groups and generate …

Settore BIO/14 - FarmacologiaCurcumin diketone nucleophilic addition anticancer effectsSettore CHIM/08 - Chimica Farmaceutica
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