Environmental Engineering Reference
In-Depth Information
O
h
ν
O
C
CH
O
O
CN
Cl
•
CN
or
•
COO
Cl
•
C
•
O
O
Cl
O
CN
3.3.5 Miscellaneous
Pyriproxyfen
, 2-[1-methyl-2-4-(phenoxyphenoxy) ethoxy] pyridine, effective against
public health insect pests such as houseflies, cockroaches, and mosquitoes, on photo-
degradation in water and soil undergoes oxidative cleavage to form various phenolic
products as:
O
O
O
O
O
OH
N
HO
O
N
O
CH
COOH
HO
N
N
Isoproturon,
an herbicide, on irradiation forms a number of products by the successive
loss of N CH
3
group, followed by slow oxidative demethylation.
O
O
CH
3
CH
3
h
ν
N
NHCH
3
NH
C
NH
C
h
ν
(O)
O
O
CH
3
NH
2
N
NH
C
NH
C
CHO
Pendimethalin
, a selective herbicide of the dinitroaniline group, on photodecomposition
in soil and water undergoes oxidative dealkylation, nitroreduction, and cyclization.
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