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27 paź 2017 · Bordwell pKa Table. General Info. pKa is an acid dissociation constant used to describe the acidity of a particular molecule. Its value is directly related to the structure of the given compound.
- Fundamentals of Organic Chemistry
This section of professor Reich's collection contains...
- Reduction and Oxidation
Reduction and Oxidation - Bordwell pKa Table - Organic...
- Pericyclic Reactions
Pericyclic Reactions - Bordwell pKa Table - Organic...
- Organometallic Chemistry
Organometallic Chemistry - Bordwell pKa Table - Organic...
- Reactive Intermediates
This page by Professor Hans Reich (UW-Madison) provides some...
- Named Reagents
Named Reagents - Bordwell pKa Table - Organic Chemistry Data
- Natural Product Syntheses
This set of pages is a collection of short natural product...
- Acronyms
lf the aldol reaction is considered a name reaction, and all...
- Fundamentals of Organic Chemistry
pKa Data Compiled by R. Williams pKa Values INDEX Inorganic 2 Phenazine 24 Phosphates 3 Pyridine 25 Carboxylic acids 4, 8 Pyrazine 26 ... Nucleosides 21 Carbon Acids 30,31 Special Table Heterocycles 22 Indicators 31 Acridine 23 References 32-34 Benzoquinoline 24 ... Compound pK Ref. (–OOCCH2)2NH+CH2– --, 5.57 57 Phosphate 1.97, 6.82, 12.5 ...
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
Compound C has the lowest pK a (most acidic): the oxygen acts as an electron withdrawing group by induction. Compound A has the highest pK a (the oxygen is in a position to act as an electron donating group by resonance, thus destabilizing the negative charge of the conjugate base).
16 gru 2021 · The approximate ranges of pK a values for seven major functional groups are listed in Table 3.1, which serves as a very valuable starting point for us to predict and understand the acidity of any organic molecule. The strongest organic acid listed here is carboxylic acid, with a pK a of about 5; the weakest organic acids are the alkanes with pK ...
18 cze 2010 · Is it an SN2? Or possibly an E2? Both are incorrect. The reaction that happens is the simplest one - deprotonation of SH, to provide water and the deprotonated thiol. Also, the pKa table tells you about leaving group ability. Good leaving groups are weak bases!
This pK a calculator will help you determine the pK a value in two ways: from a specific pH with the Henderson-Hasselbalch equation or from the acid dissociation constant (K a). In this article, you will find information on: The definition of pK a; How to use the pK a table; Relationship between pK a and pH; Relationship between pK a and K a; and
