Examples of 'electron withdrawing group' in a sentence
Meaning of "electron withdrawing group"
electron withdrawing group - In chemistry, this phrase refers to a functional group or atom in a molecule that has a tendency to attract electron density towards itself
How to use "electron withdrawing group" in a sentence
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electron withdrawing group
Cyano group is an electron withdrawing group.
The electron withdrawing group may be either an activating group or a deactivating group.
X represents an electron withdrawing group.
Such activation is often unnecessary if the halogen is activated by an electron withdrawing group.
An electron withdrawing group or EWG draws electrons away from a reaction center.
This may be achieved by using as a substituent an electron withdrawing group.
EWG refers to electron withdrawing group and includes the substituents identified above.
A Michael acceptor is a molecule that has an alkene adjacent to an electron withdrawing group.
The group L is an electron withdrawing group which stabilises the anion intermediate in the process.
Particularly preferred radical scavengers are those in which W is an electron withdrawing group.
An example of such an electron withdrawing group W is a carbonyl group.
A preferred substituent on the six-member carbon ring is an electron withdrawing group.
Typically, the electron withdrawing group may be deactivating group.
The group at the 4 - position of the pyridine ring is preferably an electron withdrawing group.
Additionally or alternatively, the electron withdrawing group is not an alkyl group.
See also
The electron withdrawing group is usually a carbonyl, but can also be a nitrile or nitro group.
Phosphoranes are more air-stable when they contain an electron withdrawing group attached to the carbon.
Is H or an electron withdrawing group or electron donating group ;.
In this process, R4 in the starting material is preferably an electron withdrawing group.
The most preferred electron withdrawing group for Ar is halo, especially fluoro.
In a second sub-aspect, LG is an aryloxide having at least one electron withdrawing group.
As an example of a strongly electron withdrawing group one may particularly mention -SO2OH.
In a first sub-aspect, LG is an aryloxide having at least one electron withdrawing group.
The most preferred electron withdrawing group for R is halo, especially fluoro.
In a third sub-aspect, LG is an aryloxide substituted with at least one electron withdrawing group.
Therefore, R ² should not be an electron withdrawing group such as a carbamate.
In a first sub-aspect, LG is an aryloxide substituted with at least one electron withdrawing group.
In a preferred embodiment the electron withdrawing group is CHal3, especially CF3.
The method of Claim 32 wherein the olefin bears at least one electron withdrawing group.
A suitable electron withdrawing group A is, for example, cyano, carboxaldehyde, carboxylic acid or carboxylic ester.
In some embodiments, G is an electron withdrawing group.
An electron withdrawing group may be any group, which forms a stable methylene group CZ1Z2.
A method according to claim 7, wherein the R1 group is an electron withdrawing group.
Examples of A when an electron withdrawing group include C ₁ ₋ ₄ alkoxycarbonyl and cyano.
In some compounds, L1 is a bond or an electron withdrawing group.
Each P is, independently, an electron withdrawing group or hydrogen.
When the R ' group comprises an -NR1 - group, preferably the R1 group is an electron withdrawing group.
In one version, R52 is an electron withdrawing group.
In one variation, at least one of R3 or R7 is an electron withdrawing group.
The radical R1 is also, preferably an electron withdrawing group.
Catalyst A contains a ketone as the electron withdrawing group ( R ).
In a preferred embodiment, R1 and R6 form an electron withdrawing group.
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