NO2 7.7 6 SPh 17.135 SO2Ph 11.4 6 SePh 18.65 X O Ph O n 4 24.9 5 25.8 6 26.758 7 27.7 8 27.4 O n 4 26.2 5 25.851 6 26.451 O 25.8 O 16.951 O 24.7 O O 29.0 28.1 O 25.5 O 32.4 Esters t-BuO O 30.3 t-BuO O Ph 23.618 PhO S Ph 16.951 EtO O 14.258 MeO O S S OMe 22.934 20.9 EtO O N=CHPh 19.538 ββββ-Diketones X = H 13.342 Me 15.142 Et 15.343 O O X Ph ...

pKa Data Compiled by R. Williams pKa Values INDEX Inorganic 2 Phenazine 24 Phosphates 3 Pyridine 25 Carboxylic acids 4, 8 Pyrazine 26 Aliphatic 4, 8 Aromatic 7, 8 Quinoline 27 Phenols 9 Quinazoline 27 Alcohols and oxygen acids 10, 11 Quinoxaline 27 Amino Acids 12 Special Nitrogen Compounds 28 Peptides 13 Hydroxylamines 28 Nitrogen Compounds 14 ...

2017年10月27日 · In short, the stronger the acid, the smaller the pKa value and strong acids have weak conjugate bases. pKa values describe the point where the acid is 50% dissociated (i.e. deprotonated). Below are tables that include determined pKa values for various acids as determined in water, DMSO and in the gas Phase.

2010年6月18日 · To calculate the Isoelectric point of an amino acid or peptide (or protein, if you are daring), you take the pKa of the carboxylic acid (between 2 and 4 usually) and the amine (9-11), add them, and divide by 2 for the case of an amino acid with no side chain that has a …

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2 NaN 3 + 2 HNO 2 → 3 N 2 + 2 NO + 2 NaOH. Reaction with two α-hydrogen atoms in ketones creates oximes, which may be further oxidized to a carboxylic acid, or reduced to form amines. This process is used in the commercial production of adipic acid.

Table of Acids with Ka and pKa Values* CLAS * Compiled from Appendix 5 Chem 1A, B, C Lab Manual and Zumdahl 6th Ed. The pKa values for organic acids can be found in Appendix II of Bruice 5th Ed.

For a comprehensive compilation of Bordwell pKa data see: http://www.chem.wisc.edu/areas/reich/pkatable/index.htm. *Values <0 for H2O and DMSO, and values >14 for water and >35 for DMSO were extrapolated using various methods. Advanced Org. Chem., 3rd Ed. J. March (1985) Unpublished results of W. P. Jencks.

pKa's of CH bonds at Nitrile, Heteroaromatic, and Sulfur Substituted Carbon Substrate pKa H2O (DMSO) SULFIDES PhSCH2X X= Ph CN COCH3 COPh NO2 SPh SO2Ph SO2CF3 POPh2 MeSCH2SO2Ph PhSCHPh2 (PhS)3CH (PrS)3CH

2008年11月11日 · 各种酸的pKa; pKa Prediction for Organic：有机的pKa值的预测; evans_pKa_table; 无机酸和有机酸行业单位产品能源消耗限额-编辑说明; 无机酸和有机酸行业单位产品能源消耗限额-编制说明 [emuch.net]各种酸的pKa及pH值酸ka pka 值_化学_自然科学_专业资料; 无机酸高值化利用; 无机酸和有机碱的中和行为