# In benzyne intermiediate of anisole why -I effect of OCH3 is considered not +M effect of it?

Here they considered -I effect of $$\ce{OCH3}$$ so carboanion is stable at orthroposition;

But $$\ce{OCH3}$$ also shows $$\text{+M}$$ effect if $$\text{+M}$$ is shown carboanion will be stable at meta position(generally in substitution reaction we give preference to $$\text{+M > -I}$$ of $$\ce{OCH3}$$).

But for this reaction NH2 in orthro position is not at all formed.

What is exactly happening in this reaction?

• carbon already has 8 valence electrons, so -och3 won't donate anymore electrons through +M (since resonance is impossible), we only consider -I here – Sunaina Das Jun 21 at 6:26
• @Naren I think one explanation is that the carbanion is in the plane of the ring (in an sp2 orbital) while the delocalisation (+M effect) only occurs via p-orbitals perpendicular to the plane of the ring. So, the resonance does not affect the anion. – S R Maiti Jun 21 at 9:50