Organic Chemistry II
University of Illinois
Prof. Duncan J. Wardrop
Ofce Hours - SES 4446
Monday 10.30-11.30 a.m.
Thursday 3.30-4.30 p.m.
Tuesday, January 15, 13
Subject of CHEM 234
AROMATICITY: DERIVATIVES OF BENZENE
Chapters 15 & 16
Benzene, Aromaticity and
Benzene has four degrees of unsaturation, but
undergoes none of the common reactions of alkenes.
NUCLEAR MAGNETIC RESONANCE SPECTROSCOPY!
Nuclear Magnetic Resonance (NMR) spectroscopy is a
technique that provides information about nuclei in a
molecule. The technique exists because one of the
When an organic compound absorbs radiation with
a wavelength of = 2 15 microns (infrared
radiation; 4000600 cm-1), specific vibrational,
stretching and bending motions, are excited. The
frequency at which this occurs is d
Conjugated Dienes &
A conjugated system consists of a series of adjacent
sp or sp2 centers such that there can be overlap of electrons.
Vitamin A: Retinol
In an alkene, the adjacent p-orb