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Chapter – 4 Studies on different types of reactions…..
3 After N5-C6 and N7-C8 bond cleavages, C4-N5 bond cleavage with
subsequent loss of nitro group gave characteristic peak at 374 m/e. [2]
4. After C4-N5 bond cleavage and loss of nitro group, C18-C22 bond
cleavage gave characteristic peak at 291 m/e. [3]
5. After C18-C22 bond cleavage, N20-C28 bond cleavage gave
characteristic peak at 223 m/e. [4]
4.11.1.5 FRAGMENTATION PATTERN FOR DNJ-1703
O 35
N +
O
34
-
36
25
26
24
27
23
22
S 16
HN 7
6
N 19
17
8
N
H 5
N 20
33
18 21
3
4
28
32
O 15
2
10
11
29
4.11.2 IR SPECTRAL STUDY
31
O 1
30
9
12
14
13
[1]
O 35
N +
O
34
-
36
25
26
24
27
23
22
IR spectra of the synthesized compounds were recorded on Shimadzu
FT IR 8400 spectrophotometer using Diffused Reflectance Attachment (DRA)
System using Potassium Bromide.
In case of DNJ-701 to DNJ-705 series of compounds, stretching and
bending frequency for aromatic and stretching frequencies for methyl,
Department of Chemistry, Saurashtra University, Rajkot – 360 005 240
N 19
18 21
17
8
H2N 5
N 20
33
3
4
28
32
O 15
2
10
11
31
29
O 1
30
9
12
14
13
18 21
495 m/e 438 m/e 374 m/e
N 19
17
8
H
N
20
18 21
3
4
+.
223 m/e
O 15
2
10
11
O 1
9
12
14
13
+.
[2]
[4]
25
26
24
N 19
27
23
[3]
17
8
22
N 20
33
18 21
3
4
28
32
2
N 19
O 15
10
11
29
17
8
31
O 1
291 m/e
9
12
N 20
30
33
3
4
+.
28
14
13
32
O 15
2
10
11
31
29
O 1
30
9
12
+.
14
13