(B) Addition of alcohols 半缩醛 半缩酮 缩醛 缩酮 注: 1、为醚类化合物 2、简单的醛与过量的醇:反应容易 简单的酮与过量的醇:反应不容易 3、缩醛(酮)碱性条件下稳定,在酸性水溶液中水解: HO OH O CO C O H3+O CO 用途:保护羰基 保护羟基 10.3.3 Reaction with Sulfur Nucleophiles 与含硫亲核...
Nucleophilic addition to the carbonyl group亲核加成 Nucleophilicadditiontothecarbonylgroup Thereactionhastwosteps:nucleophilicadditionofcyanide,followedbyprotonationoftheanion.Infact,thisisageneralfeatureofallnucleophilicadditionstocarbonylgroups.Theadditionstepismoreimportant,anditformsanewC–CσbondattheexpenseoftheC...
Nucleophilic Addition, and Reaction of Fullerene Anions with ElectrophilesNucleophilic AdditionLecture Notes on Fullerene Chemistry
Nucleophilic Addition Reaction is a Reaction in which a Nucleophile forms a Sigma Bond with an Electron Deficient Species. Nucleophilic Addition Reaction Mechanism Explained Here.
1)nucleophilic addition-condensation reaction亲核加成-缩合反应 1.Geometric configurations of reactants and products in nucleophilic addition-condensation reaction of thiosemicarbazide(Ⅰ) with 4-chlorochalcone(Ⅱ) were optimized by means of quantum chemistry DFT/B3LYP/6-31G.对氨基硫脲与4-氯查尔酮亲核加...
The enantiomer selection in the nucleophilic addition reaction of optically active amines such as [alpha]-amino acid esters to phenylalanine and N-methylphenylalanine N-carboxyanhydride in m-dimethoxybenzene as a solvent has been investigated. Stereoselectivity between the amines and the N-carboxyanhydrides...
ChemInform Abstract: Nucleophilic Addition of Organocerium Reagents to α-Alkoxy Hydrazones: A New Type of Elimination Reaction to α-Hydroxynitrilesreactions of organo-metal compoundscarbamic acid derivatives (acyclic compounds)nitriles (acyclic compounds)...
1Nucleophilicreactionsinvolvingenolateanions(2)Aldehydes,KetonsandothercarbonylcompoundshavingHonα-C->inequilibrium(insolution)->Keto-Enoltautomerization2NucleophilicreactionsinvolvingenolateanionsAcylationofenolateanions->Claisenreaction(condensation)2molester-(base)->β-ketoester3Nucleophilicreactionsinvolvingenolateanio...
1)nucleophilic addition reaction亲核加成反应 1.Ab initio and DFT(B3LYP) calculations using the 6-31G~(**) basis set were employed to study the mechanism of the nucleophilic addition reaction between silyleneimine and water .采用量子化学从头算和密度泛函方法在HF/6-31G**及B3LYP/6-31G**水平上...
The possibly reversible addition-elimination reaction between CH318O−, CD3O−, 18O− • and D18O− and various carbonyl-containing substrates has been studied in the gas phase using Fourier-Transform Ion-Cyclotron-Resonance (FT-ICR) Mass Spectrometry.DOI: 10.1002/recl.19881070703 被引量...