Arenes with electron donating groups react with halogens even in the absence of Lewis acids.
2.
Electron donating groups ( EDG ) favor the norcaradiene, while electron withdrawing groups ( EWG ) favor the cycloheptatriene.
3.
For meta-directing groups ( electron donating group or EDG ), ? more positive than ? meta and ? para.
4.
Electronic rationalization for stabilization of the Walsh orbitals is possible for both electron withdrawing and electron donating groups at the C7 carbon.
5.
Contrastingly, electron donating groups increase the negative quadropole, which may increase the interaction strength in a T-shaped configuration with the proper geometry.
6.
In the case of electron donating groups, orbital overlap is again possible now in the LUMO, resulting in an increase in antibonding character destabilizing the norcaradiene tautomer.
7.
Examples of electron donating groups present in organic compounds are the amino (-NH2 ), hydroxyl (-OH ), and alkoxy (-OR ) groups.
8.
In this case the electron donating group can be a pseudo electron donating group which is capable of eliminating and donating an electron pair into the carbon with the breaking bond.
9.
In this case the electron donating group can be a pseudo electron donating group which is capable of eliminating and donating an electron pair into the carbon with the breaking bond.
10.
The Grob fragmentation can be applied as an example of such an expansion . & & Like the pinacol type migration the Grob fragmentation relies on an electron donating group to promote the bond migration and encourage the leaving group to be expelled.
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