Examples of 'methylene group' in a sentence
Meaning of "methylene group"
In organic chemistry, a methylene group refers to a unit consisting of two hydrogen atoms bonded to a carbon atom. It is often represented as -CH2- and can be found in various organic compounds
How to use "methylene group" in a sentence
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methylene group
A methylene group is preferred as the alkylene group.
This process adds one methylene group.
The methylene group is even more acidic in these derivatives.
A represents a sulfur atom or a methylene group.
This method provides a methylene group adjacent to the carbonyl group.
The pendant chain is a quaternary ammonium methylene group.
Eventually the methylene group is further reduced and released as a molecule of methane.
Reduction converts the oxo group to a methylene group.
Activated methylene groups have a methylene group between two strong electron withdrawing groups.
In preferred embodiments there is one such methylene group.
Q1e is preferably a methylene group or an ethylene group.
R was either hydrogen or substituted methylene group.
Among them, a methylene group is more preferable.
B most preferably represents a methylene group.
E represents a methylene group or a sulphur atom ;.
See also
E is more preferably an unsubstituted methylene group.
W represents a methylene group or a carbonyl group ;.
Q is preferably a single bond or a methylene group.
Protonation of the methylene group of the enolate is non-stereospecific.
A is advantageously the methylene group.
Y is a methylene group or a hetero atom such as an oxygen or nitrogen atom ;.
Represents a methylene group.
In this example the linking group so formed is the methylene group.
A cysteine adduct is formed with the methylene group and this is the active form.
Ethacrynic acid is a phenoxyacetic acid derivative containing a ketone group and a methylene group.
Preferred is a methylene group.
A compound according to any preceding claim wherein W is a direct bond or a methylene group.
It occurs only when two hydrogen atoms on a methylene group differ stereochemically from each other.
It is particularly advantageous that A be the methylene group.
X represents a bond, a methylene group optionally substituted or a carbonyl group.
The divalent organic group is particularly preferably a trimethylene group or a methylene group.
May be a methylene group or an ethylene group, but a methylene group is preferred.
Is a fused or conjugated bicyclo aromatic system linked through a methylene group to the molecule.
Is preferably a methylene group or an ethylene group, more preferably a methylene group.
Difunctional and multifunctional blocked isocyanates or active methylene group blocked isocyanates are preferred.
The sources of methylene group ( formaldehyde oxidation level ) are serine and glycine.
The indazolone is reacted with ethyl diazoacetate to introduce a methylene group alpha to the carbonyl.
X is a methylene group, wherein the methylene group may be substituted with a methyl group ;.
A preferred compound includes a compound having a methyl group or methylene group in the benzyl position.
Among them, methylene group and ethylene group are preferred, and methylene group is more preferred.
The ketone group can also be reduced completely to a methylene group by a two step procedure.
A is a methylene group substituted with phenyl ; B represents a radical of formula.
The derivatives however comprise an additional methylene group between the vinyl and the carbonyl.
When there is one halogen substituent, it is preferably para to the indicated methylene group.
However, an imino group or a methylene group is preferred.
Preferably the alkyl group is a small alkyl group, most preferably a methylene group.
Specifically, SeO2 will convert an allylic methylene group into the corresponding alcohol.
Represents a methylene or ethylene group, preferably a methylene group.
For example, as the number of methylene group increases, the hydrolysis rate decreases.
In a preferred embodiment A is a methylene group.
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