Illustrated Glossary of Organic Chemistry
Ortho:
The relationship between two
benzene ring
substituents
on adjacent
benzene ring
carbons.
The relationship of two
benzene ring
substituents
can be described as ortho,
meta
, or
para
.
Ortho-dibromo
benzene
o
-dibromo
benzene
1,2-dibromo
benzene
Meta
-
nitro
toluene
m
-
nitro
toluene
3-
nitro
toluene
Para
-
xylene
p
-
xylene
1,4-di
methyl
benzene
Related terms:
Disubstituted
,
ortho/para director
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