SYNTHESIS OF NOVEL S-, S,S-, S,S,S-, AND N,S-SUBSTITUTED NITRODIENES
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(d, J: 8.5 Hz, 4H, Arom-H), 7.35 (d, J: 8.5 Hz, 4H, Arom-H), 4.40–3.51 (b, 8H, N–CH2),
2.10–1.80 (b, 2H, N–CH2). 13C-NMR (125.68 MHz, DMSO, ppm): δ 129.9, 127.5, 124.6,
124.2, 119.0 (Cq), 134.7, 133.8 (CHarom), 55.0, 54.8 (N–CH2), 29.7 (CH2). UV (CHCl3):
λmax (logꢀ) 394 (4.6), 251 (4.9). MS (+ESI): m/z 874.37 [M]+; C25H18Br2Cl6N4O4S2
(875.09): Calcd. C 34.31, H 2.07, N 6.40, S 7.33; Found C 35.14, H 2.15, N 5.52, S 7.89.
4-Bromo-3,4-dichloro-1-[(4-fluorophenyl)piperazinyl]-1-(2-naphtylthio)-2-
nitro-1,3-butadiene (13k) was synthesized from 4-bromo-1-(2-naphtylthio)-2-nitro-1,3,4-
trichloro-1,3-butadiene 5c (0.036 g, 0.08 mmol) and 1-(4-fluorophenyl)piperazine (0.014
g, 0.08 mmol) according to the general procedure C.
Yield: 0.042 g (89%); mp: 178.3 ◦C–179.0 ◦C. IR(KBr, cm−1): υ 1510, 1380 (NO2),
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1600 (C C), 2926, 2841 (C–H), 3054 (Ar–H). H NMR (499.83 MHz, CDCl3, ppm): δ
7.95 (d, J: 10.1 Hz, 1H, Arom-H), 7.83–7.79 (dd, J: 8.6, 1.5 Hz, 1H, Arom-H), 7.79–7.72
(m, 2H, Arom-H), 7.52–7.46 (m, 2H, Arom-H), 7.45–7.38 (dd, J: 19.2, 8.6 Hz, 1H, Arom-
H), 6.83–6.76 (td, J: 8.6, 3.5 Hz, 2H, Arom-H), 6.58–6.49 (td, J: 8.4, 4.5 Hz, 2H, Arom-H),
3.80–3.60 (bs, 2H, CH2piper.), 3.60–3.40 (bs, 2H, CH2piper.), 2.80–2.60 (bs, 4H, CH2piper.);
APT-NMR (125.68 MHz, CDCl3, ppm): δ 165.3, 159.1, 157.1, 146.8, 134.0, 133.3, 128.0,
113.2, 112.6 (Cq), 132.9, 130.3, 129.1, 129.0, 128.2, 128.0, 127.9, 127.7, 119.0, 118.9,
116.1, 115.9 (CHarom), 53.2, 49.7 (CH2). UV (CHCl3): λmax (logꢀ) 389 (4.59), 250 (4.95).
MS (+ESI): m/z 584.08 [M+H]+, 605.98 [M+Na]+; MS2: m/z 536.03 [M–(NO2)]+, 501.87
[M–(Cl+NO2)]+; C24H19BrCl2FN3O2S (583.30): Calcd. C 49.42, H 3.28, N 7.20, S 5.50;
Found C 50.07, H 2.74, N 6.93, S 5.81.
1-Benzylthio-4-bromo-3,4-dichloro-1-[(4-fluorophenyl)piperazinyl]-2-nitro-1,3-
butadiene (13l) was synthesized from 1-benzylthio-4-bromo-2-nitro-1,3,4-trichloro-1,3-
butadiene (5d) (0.273 g, 0.68 mmol) and 1-(4-fluorophenyl)piperazine (0.11 g, 0.68 mmol)
according to the general procedure C. ◦
◦
Yield: 0.3 g (81%); mp: 166.9 C–167.8 C. IR(KBr, cm−1): υ 1538, 1509, 1371
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(NO2), 1580 (C C), 2915, 2866 (C–H), 3065, 3034 (Ar–H). H NMR (499.83 MHz,
CDCl3, ppm): δ 7.30–7.18 (m, 5H, Arom-H), 6.94–6.87 (t, J: 8.3 Hz, 2H, Arom-H),
6.82–6.77 (dd, J: 4.4, 2.4 Hz, 2H, Arom-H), 4.13 (s, 2H, Ar-CH2), 3.95–3.30 (bs, 4H,
CH2piper.), 3.21–3.04 (s, 4H, CH2piper.); 13C-NMR (125.68 MHz, CDCl3, ppm): δ 166.3,
165.9, 157.9, 155.9, 145.6, 134.5, 134.4, 129.1, 127.1, 111.7, 111.1 (Cq), 128.2, 127.9,
127.8, 127.3, 117.7, 117.6, 114.9, 114.8 (CHarom), 39.2 (S–CH2), 52.1; 49.4; 49.3 (CH2);
UV (CHCl3): λmax (logꢀ) 394(4.08), 293(4.04), 248(4.14). MS (+ESI): m/z 548.21 [M]+;
MS2: m/z 499.91 [M–NO2]+, 465.94 [M–(NO2+Cl)]+. C21H19BrCl2FN3O2S (547.27):
Calcd. C 46.09, H 3.50, N 7.68, S 5.86; Found C 46.21, H 2.25, N 7.63, S 6.01.
1-Benzylthio-4-bromo-3,4-dichloro-1-[(2-fluorophenyl)piperazinyl]-2-nitro-1,3-
butadiene (13m) was synthesized from 1-benzylthio-4-bromo-2-nitro-1,3,4-trichloro-1,3-
butadiene (5d) (0.1 g, 0.25 mmol) and 1-(2-fluorophenyl)piperazine (0.045 g, 0.25 mmol)
according to the general procedure C.
Yield: 0.10 g (73%); mp: 163.7 ◦C–165.2 ◦C. IR(KBr, cm−1): υ 1530, 1331 (NO2),
1610, 1574 (C C), 2951, 2928, 2838 (C–H), 3000, 2994 (Ar–H). 1H NMR (499.83 MHz,
CDCl3, ppm): δ 7.32–7.20 (m, 5H, Arom-H), 7.04–6.89 (m, 3H, Arom-H), 6.87–6.80 (t,
J: 8.5 Hz, 1H, Arom-H), 4.20 (s, 2H, S–CH2), 4.01–3.25 (b, 4H, CH2), 3.10 (s, 4H, CH2).
APT-NMR (125.68 MHz, CDCl3, ppm): δ 155.7,153.8, 137.5, 134.5, 129.1, 127.2, 111.6,
110.9 (Cq), 128.1, 127.9, 127.3, 123.6, 122.7, 118.3, 115.5, 115.4 (CHarom), 39.2 (S–CH2),
52.3, 49.4 (N–CH2); UV (CHCl3): λmax (logꢀ) 394 (4.1), 282 (4.1), 247 (4.2). MS (+ESI):
m/z 569.96 [M+Na]+, 547.99 [M]+; MS2: m/z 529.73 [M–O]+, 499.82 [M–NO2]+, 330.98
[M–(Cl+piperazine group)]+. C21H19BrCl2FN3O2S (547.27): Calcd. C 46.09, H 3.50, N
7.68, S 5.86; Found C 45.77, H 4.11, N 7.14, S 5.33.