Is nitroso ter benzene ring a class 1 substituent or a class 2 is it a viable or blunt benzene ring?

Nitroso is less in contact with the organic, and its activation and tonnity have not been discussed, but from the analysis of the structure of the nitroso group, it should be a tonyl, because the tonyl group is generally a highly electronegative atom or a group with double and triple bonds, and the nitroso group contains nitrogen-oxygen double bonds, which has strong electron absorption. (It can be found that the xp = of the nitroso group should not be lower than the electronegativity of the nitroso group.)

The contact of nitroso machine is relatively small, and the analysis of the structure of the nitroso group should cause the tonyl to be highly electronegative or double bond, and the triple bond group nitroso-containing nitrox-oxygen double bond has strong electrical absorption (check the nitro group xp = nitroso electronegativity should be lower.

This question is the organic postgraduate examination question of Nankai University, nitroso is the ortho-para positioning group, I will not make a diagram and will not pass the resonance type up, the electrophile attack ortho-para will produce a stable structure of all atoms (except h) that satisfies the electron octapo, and the offensive key position does not! View the original post" satisfied.

The reaction of nitroso groups on benzene rings has not been seen. It can't be unstable, right? View the original post

1.Nitroso-type first positioning group, but blunt, similar to halogen 2Carbene reagent and double bond form a ternary ring View the original post

I've seen in a book before that nitroso seems to be a passivated benzene ring, and the second one is a carbene-like group, but it reacts with acid chloride and rearranges. I forgot the specific process, find it another day, and send it to you. View the original post

I also think that nitroso should be a class 2 positioning base, it should be electron sucking, but this reason alone should not be very sufficient, can you say that the 2nd floor is a class of base reasons, thank you View the original post".

1. The activity of benzene ring usually refers to the activity of electrophilic reaction 2. Electrophilic reaction, as the name suggests, the more electrons, the better the reaction, that is, the more electrons, the higher the activity 3. The nitro group is a strong pull electron group.

4. In nitrobenzene, nitro can greatly reduce the electron cloud density of the benzene ring 5. The electron cloud density on the benzene ring is low, and the reactivity is poor.

6. As for why electrons are pulled, it is because the n atom in the nitro group is positively charged, and the different charges attract each other.

Nitrification is an electrophilic substitution reaction on the benzene ring, and the higher the electron cloud density on the benzene ring, the stronger the reactivity, that is to say, the reactivity increases when the electron group is brought on the benzene ring, and the stronger the electron donating ability, the more powerful the activation; When the benzene ring has a pull-electron group, the reactivity decreases, and the stronger the pull-electron ability of the pull-electron group, the more passivated it is.

The nitro group is a strong pull electron group.