Table 14: 13C NMR Data for 6a-e; chemical shifts in ppm relative to TMS(1%) at room temperature in CDCl3.
|
|
|
Piperazine |
Piperazine |
|
|
|
No. |
X |
Aromatic |
I |
II |
CH2 |
CH3 |
X |
6a |
p-CN |
153.8, 138.0, 137.5, |
52.1(br) |
(a) |
62.75 |
21.4 |
108.4(CN) |
133.0, 129.8 |
|
|
128.3, 128.1, 126.2, |
|
|
|
|
|
|
|
121.1,119.4 |
|
|
|
|
|
|
|
154.1, 138.0, 137.6, |
|
|
|
|
|
6b |
p-CO2CH3 |
130.6,129.8 |
52.3(br) |
(a) |
62.8 |
21.4 |
51.9(OMe) |
|
|
128.73,128.0,127.0, |
|
|
|
|
167.0(C=O) |
|
|
126.2,120.4 |
|
|
|
|
6c |
p-Br |
149.5, 138.0, 137.7, |
52.3 |
(a) |
62.8 |
21.4 |
- |
131.8,129.8 |
|
|
128.3, 128.1, 126.2, |
|
|
|
|
|
|
|
122.3,119.1 |
|
|
|
|
|
|
|
148.2, 137.9, 137.7, |
|
|
|
|
|
6d |
p-CH3 |
135.8,129.8 |
52.4 |
47.4(br) |
62.9 |
21.4 |
21.0(Me) |
|
|
129.5, 128.2, 128.0, |
|
|
|
|
|
|
|
126.2,120.5 |
|
|
|
|
|
|
|
155.6, 145.1, |
|
|
|
|
|
6e |
p-NO2 |
138.1, 128.3 |
52.7(br) |
51.6(br) |
62.7 |
21.4 |
- |
|
|
128.2, 126.2, |
|
|
|
|
|
|
|
124.8, 120.7 |
|
|
|
|
|