Ch_322b_21.01

Ch_322b_21.01 - Chapter 21.1 lecture note

Info iconThis preview shows pages 1–4. Sign up to view the full content.

View Full Document Right Arrow Icon
Phenols and Aryl Halides Nucleophilic Aromatic Substitution Phenols Phenols have the hydroxyl group attached to a benzene ring. The name is derived from the aryl group name by dropping the "yl" in phenyl and adding "ol." Substituted phenols are named by the usual positional rules used for substituted benzenes. The names of polycyclic aromatics with the hydroxyl group are derived in a similar way. 1 2 OH naphthalene 2-naphthol 1 2 3 4 10 5 6 7 8 9 anthracene OH 9-anthrol OH phenol OH p-bromophenol (4-bromophenol) Br OH Cl NO 2 2-chloro-4-nitrophenol
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Some Important Phenols and their Common Names Some Naturally Occurring Phenols CH 3 OH o-cresol 2-methylphenol CH 3 OH p-cresol 4-methylphenol OH OH hydroquinone 1,4-benzenediol OH OH resorcinol 1,3-benzenediol HO CH 2 CHCO 2 - NH 3 + tyrosine an aminoacid in proteins HO CH 2 CH 2 NH 2 dopamine N HO CH 2 CH 2 NH 2 H serotonin neurotransmitters CO 2 CH 3 OH methyl salicylate (oil of wintergreen) CO 2 H OH salicylic acid CO 2 H OCCH 3 O = O-acetylsalicylic acid aspirin
Background image of page 2
Physical Properties Phenols like alcohols form strong intermolecular hydrogen bonds
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 4
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 10/20/2009 for the course CHEM 322BL at USC.

Page1 / 11

Ch_322b_21.01 - Chapter 21.1 lecture note

This preview shows document pages 1 - 4. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online