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Chapter – 2 Microwave assisted simple and fast…..
2.6.1.4 FRAGMENTATION PATTERN FOR DNJ-602
17
16
18
15
O 8
13
14
274 m/e
5
7
6
[8]
O 20
12
11
N
10
N 4
9
O 1
189 m/e
O
3
2
O 19
N
H
N
O
O
92 m/e
+.
+.
[1] 16 14
[2] 16 14
[3]
O
2.6.2 IR SPECTRAL STUDY
17
18
15
17
16
O 8
13
5
7
262 m/e 246 m/e
18
15
H3C 7
176 m/e
[7]
O 20
12
11
N
10
N 4
CH 3
6
13
14
9
121 m/e
3
O 19
CH 3
2
12
11
N
10
N
H
+. +. +.
O 20
9
+.
+.
O 19
205 m/e
218 m/e
234 m/e
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-301 to DNJ-305, aromatic C-H stretching and bending
frequencies were found near 3050 cm -1 and 1460 cm -1 respectively. C-H
stretching frequencies for methyl and methylene group were obtained near
2950 cm -1 and 2850 cm -1 respectively. Aliphatic C-N vibrations were found in
the region of 1020-1220 cm -1 . Characteristic frequency for ether linkage was
also found near 1050 cm -1 in DNJ-302. Along with all the frequencies obtained
Department of Chemistry, Saurashtra University, Rajkot – 360 005 94
[6]
17
17
16
18
15
O 8
18
15
O 8
13
5
7
O 20
12
11
N
10
N 4
CH 3
6
13
14
7
9
CH 3
3
O 20
12
11
N
10
9
NH 2
4
+.
O 19
O 19
[5]
17
16
17
16
[4]
18
15
18
15
O 8
13
14
H3C 5
O 8
13
14
H3C 5
7
7
O 20
12
11
N
10
N 4
9
O 20
12
11
N
10
9
NH
4
CH 3
3
+.
O 19
O 19