Advices For Studying Organic Chemistry

4. The common names isopropyl, isobutyl, sec-butyl, tert-butyl are approved by
   the IUPAC for the unsubstituted groups.

1. In deciding on alphabetically order disregard structure-defining prefixes that
   are written in italics and separated from the name by a hyphen. Thus
   “tert-butyl” precedes “ethyl”, but “ethyl” precedes “isobutyl”.

5. The common name neopentyl group is approved by the IUPAC.

4.3D CLASSIFICATION OF HYDROGEN ATOMS

1. Hydrogen atoms are classified on the basis of the carbon atom to which they are
   attached.

1. Primary (1°), secondary (2°), tertiary (3°):

H 3 CCH

3 o Hydrogen atom

CH 2 CH 3

CH 3

1 o Hydrogen atoms

2 o Hydrogen atoms

H 3 CCCH 3

CH 3

CH 3

2,2-Dimethylpropane (neopentane) has only 1° hydrogen atoms

4.3E NOMENCLATURE OF ALKYL HALIDES

1. Haloalkanes:

CH 3 CH 2 Cl CH 3 CH 2 CH 2 F CH 3 CHBrCH 3

Chloroethane 1-Fluoropropane 2-Bromopropane
Ethyl chloride n-Propyl fluoride Isopropyl bromide