Which groups are ortho and para directing?

Examples of ortho-, para– directors are hydroxyl groups, ethers, amines, alkyl groups, thiols, and halogens. Here’s a concrete example: the nitration of methoxybenzene (also known as anisole). ortho- and para- products dominate, while meta– products comprise less than 3\%.

Is COOH ortho para or meta directing?

For example, a carboxylic acid is a meta director because it experiences resonance, a delocalization of electrons. All of the answer choices in this problem have a lone pair of electrons on the point of contact with the benzene ring and they all are ortho/para directors.

What is the difference between ortho para and meta?

The key difference between ortho, para and meta substitution is that ortho substitution has two substituents in 1 and 2 positions of the ring, but para substitution has two substituents in 1 and 4 positions. Meanwhile, meta substitution has two substituents in 1 and 3 positions.

What is meta directing?

Meta director: In electrophilic aromatic substitution, a substituent that favors electrophilic attack meta to the substituent. Most meta directors are also deactivators. Bromination of nitrobenzene gives meta-bromonitrobenzene as the major product because the nitro group is a meta director.

Which is not meta directing group?

Which of the following is not a meta-directing group in electrophilic aromatic substitution? The groups -SO3H,-COOH, and -CN are all moderately deactivating and meta directing howerver, group -NH2 is strongly activating and ortho-para directing.

Which of the following groups is ortho and para directing towards electrophilic substitution?

Halogens are electron withdrawing groups due to electronegative nature hence they deactivate benzene ring for electrophilic substitution but are o,p-directing.

What is ortho and para in chemistry?

The terms ortho, meta, and para are prefixes used in organic chemistry to indicate the position of non-hydrogen substituents on a hydrocarbon ring (benzene derivative). The prefixes derive from Greek words meaning correct/straight, following/after, and similar, respectively.

What is ortho meta and para in chemistry?