[PDF] Approximate pKa chart of the functional groups: values to know 1 PDF pka-chart.pdf

Protonated carbonyl pKa = -7 Other important pKa's 2 Protonated alcohol or ether pKa = -2 to -3 H2 = 35 3 Alpha proton of ketone/aldehyde pKa = 20 11

[PDF] pKa Table1

Oxime ethers are ~ 10 pka units less acidic than their ketone counterparts Streitwieser, JOC 1991, 56, 1989 For a comprehensive compilation of Brodwell pKa

[PDF] CH 2 POLARITE-SOLUBILITE ACIDES ET BASES PROPRIETES

Formule pKa Base conjuguée Acide phosphorique H3 PO4 2 10 H2 PO4 Ether Benzène Eau NaOH Phénolate : Extraction basique Phénol/Benzène

[PDF] pKa Chart

sulfuric acid hydroiodic acid hydrobromic acid protonated ether protonated alcohol hydronium ion nitric acid hydrofluoric acid hydrogen nitride carboxylic acids

[PDF] Chimie organique - Chimie en PCSI

On rappelle (§ chapitre 13 1), que plus le pKA du couple AH/A- est grand, plus la base A- Williamson a réalisé la synthèse des éther-oxydes par substitution

[PDF] Énols et énolates - Retour à la page daccueil du Département

6 jan 2017 · CH3O CH3 Base O CH3O CH2 énolate H-Base + pKa = 25 ester O Ph O O Ph O Bu O Br LDA éther O enolates-20 2017-01-06 15:52

[PDF] Lipophilie, coefficient de partage

(hexane, éther, chloroforme, octanol ) Le coefficient de l'extraction est favorisée lorsque le pH est inférieur au pKa (prédominance de la forme neutre) 3

[PDF] Les alcools - AC Nancy Metz

Enfin, les alcools sont des acides très faibles dans l'eau, mais leur pKa extrapolé est Les alcools peuvent être transformés en éthers méthyliques grâce au

[PDF] Chapter 17: Alcohols and Phenols

76 Chapter 17: Alcohols and Phenols phenol (aromatic alcohol) pKa~ 10 alcohol pKa~ 16- Alkyl halides will react with some metals (M0) in ether or THF to

Acid-catalysed α-O-4 aryl-ether bond cleavage in methanol - Nature

of the ether chemical bonds during the lignocellulosic biomass organosolv pulping in to the difference in acidity (methanol pKa = 15 5, ethanol pKa = 15 9) 35

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[PDF] [PDF] Approximate pKa chart of the functional groups: values to know 1