Search results
Results from the WOW.Com Content Network
This page by Professor Hans Reich (UW-Madison) provides a collection of common structural motifs in Organic Chemistry and their corresponding pKa values.
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 ... H3O+ 97 * Indicates a thermodynamic value. Pb(OH)2 0* 6.48 (10.92) 4 (78) Provided by the ACS, Organic Division Updated 4/7/2022 Page 2.
Equilibrium pKa Table (DMSO Solvent and Reference) Hydrocarbons 20.117 21.822 22.522 17.317 Ph 18.019 26.122 Fluorenes X X = H 22.61 Me 22.31 Ph 17.91 tBu 24.421 SiMe3 21.5 26 SiPh3 18.6 26 = Fl-X
The pka of water and H 3O+ have been experimentally determined to be 14.0 and 0.0, respectively. Earlier values of 15.7 and –1.74, respectively are erroneous numbers proposed by scientists who made some errors in the calculated “rational” values. See: 1) Helv. Chim. Acta 2014, 97, 1. and 2) J. Chem. Educ. 2017, 94, 690.
Info on pKa values, nucleophile/electrophiles, A-values, solvents, physical constants, etc.
Info on pKa values, nucleophile/electrophiles, A-values, solvents, physical constants, etc. A-Values (Hans Reich's Collection - DOC) Bond Energies and Bond Dissociation Energies (Prof. William Reusch, Michigan State University)
deprotonations of compounds whose pKa is less than 36. Hindered and certain heterosubstituted ketones are sometimes reduced.[1] In this case use LiTMP or LiHMDS. The amine is volatile and can be removed even from enolate solutions by distillation. LDA can be prepared from Li°.[1b] Lithium Diethylamide (LiNEt2). Used for isomerization of ...
This section of professor Reich's collection contains fundamental information on Organic Chemistry including symbolic notation using arrows and designating stereochemistry; bond formation; synthons for C-C bond formation; typical nucleophiles and electrophiles; A-values (Conformational energies); and an electronegativities periodic table.
It describes Nuclear Magnetic Resonance (NMR) in details relevant to Organic Chemistry. It also includes NMR summary data on coupling constants and chemical shift of 1H, 13C, 19F, 31P, 77Se, 11B. Spectra (PDF form) of more than 600 compounds are also provided.
This page is the homepage of Professor Hans Reich (UW-Madison) collection including: pKa, total syntheses, NMR, and organometallic chemistry, etc.