Examples of 'pinacol' in a sentence
Meaning of "pinacol"
Pinacol is a type of organic compound in chemistry, specifically a vicinal diol derived from ketones or aldehydes
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- any tetra-substituted derivative of ethylene glycol, of general formula R₂C(OH)-C(OH)R₂, especially the simplest example where R is methyl
How to use "pinacol" in a sentence
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pinacol
A common migration introduction of carbon is a pinacol rearrangement.
Pinacol is a white solid organic compound.
The behaviour of pinacol was found to be anomalous.
Pinacol ester is treated with sodium periodate followed by acid.
Preparation of a pinacol type starting material.
The pinacol coupling can be followed up by a pinacol rearrangement.
So that would be the pinacol reduction.
Pinacol boronic ester.
A particular diol is pinacol.
Pinacol coupling reaction.
Ketyls are also involved in the pinacol coupling reaction and the McMurry reaction.
Pinacol vinylboronate coupling.
The name of the rearrangement reaction comes from the rearrangement of pinacol to pinacolone.
Pinacol type rearrangements are often used for this type of contraction.
The solids were collected by filtration to obtain the product not contaminated with pinacol.
See also
The pinacol or pinanediol ester of the selected peptide boronic acid is dissolved in diethylether.
There is disclosed an amino boronic acid derivative which avoids the disadvantages of pinacol esters.
Examples of boronic acid ester include boronic acid pinacol ester and boronic acid catechol ester.
Preferred examples of the boronate derivative can include boronic acid and boronic acid pinacol ester.
Other key reactions encountered in this synthesis are a pinacol coupling and a Reformatskii reaction.
Typical boronic esters used include for example the dimethylboronic ester and the pinacol ester.
Removal of the pinacol group with conditions described herein yields the corresponding boronic acids XVII.
Activated manganese facilitates the Mn version of the Barbier reaction and the pinacol coupling.
Pinacol ester is then oxidatively cleaved to give compound 6.
And acidic hydrolysis of both Boc groups and the pinacol group to give III.
For example, pinacol may be replaced by another diol.
For example, boronic acid ester may be pinacol ester or catechol ester.
A method of claim 83 wherein the ether is diethyl ether and the ester is a pinacol ester.
Fittig discovered the pinacol coupling reaction, mesitylene, diacetyl and biphenyl.
A method of claim 72 wherein the ether is diethylether and the ester is a pinacol ester.
Similarly, the aldol condensation of pinacol gives a highly branched unsaturated ketone,.
For the pinacol ester of Compound 2, final purification by distillation is preferred.
A thermal radical initiator selected from a pinacol or an ether, ester or silyl derivative thereof.
A process of claim 22 in which the diol is pinacol.
Likewise, acetone is converted to pinacol with a magnesium-mercury amalgam in a pinacol coupling reaction.
Preparation of 4-aminophenylboronic acid pinacol ester.
Furthermore, they can be transformed into pinacol derivatives by catalytic hydroxylation with hydrogen pe roxide.
Thus, colorless crystals of 3-aminophenylboronic acid pinacol ester are obtained.
The small amount of pinacol and other by-products remaining after the flash distillation is discarded.
In his second publication in 1860 he reacted paraceton with sulfuric acid the actual pinacol rearrangement.
A general procedure for the boronic acid pinacol ester formation is described below in Scheme 8.
The solids were collected by filtration was contaminated with only approximately 1 % pinacol by 1H NMR.
The product still contained 4 % of pinacol so the batch was divided in two.
A peptide of claim 7, wherein R2 and R3 taken together represent the residue of pinacol or pinanediol.
A further 1.2 g of pinacol and molecular seives were added and stirred overnight.
Preferably, R2 and R3 taken together represent the residue of pinacol or pinanediol.
To the solution of this crude pinacol boronate product in THF ( 5 mL ) was added aq.
A method of claim 75 or claim 76 wherein the ester is a pinacol ester.
Figure 11, Mechanism of a pinacol rearrangement.
Filter the solids to give 60.7g of a wet cake that is now free from pinacol.
