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Chapter – 4 Studies on different types of reactions…..
(Ar-H, str), 2971 (-CH3), 2853 (-CH2), 1724 (>CO), 1708 (>CO), 1625, 1580,
1535, 1440 (Ar-H, ben), 1327 (C-N, Ar, 3°), 1092 (C-O-C), 787 (1,3-di sub);
MS m/z = 479 (M + ); Anal. Calcd. for C27H17N3O6: C, 67.64; H, 3.57; N, 8.76.
Found: C, 67.69; H, 3.53; N, 8.80.
3-{(2Z)-3-[3-(4-CHLORO PHENYL)-1-PHENYL-1H-PYRAZOL-4-YL] PROP-
2-ENOYL}-4-HYDROXY-2H-CHROMEN-2-ONE (DNJ-804): IR (KBr, cm -1 ):
3539 (-OH), 1722 (>CO), 1708 (>CO), 1610, 1505, 1429 (Ar-H, ben), 1305
(C-N, Ar, 3°), 1095 (C-O-C), 876 (C-Cl), 842 (1,4-di sub); 1 H NMR (400 MHz,
CDCl3): δ (ppm) 5.60 (1H, d, J = 3.6 Hz), 5.70 (1H, d, J = 3.6 Hz), 7.28 (4H,
q), 7.45 (2H, t), 7.53 (2H, q, J = 0.88 Hz, J = 0.92 Hz), 7.68 (2H, d, J = 9.52
Hz), 7.86 (3H, qt, J = 1.92 Hz), 7.95 (1H, s); MS m/z = 468 (M + ); Anal. Calcd.
for C27H17ClN2O4: C, 69.16; H, 3.65; N, 5.97. Found: C, 69.20; H, 3.60; N,
6.00.
3-{(2Z)-3-[3-(4-FLUORO PHENYL)-1-PHENYL-1H-PYRAZOL-4-YL] PROP-
2-ENOYL}-4-HYDROXY-2H-CHROMEN-2-ONE (DNJ-805): IR (KBr, cm -1 ):
3547 (-OH), 3060 (Ar-H, str), 2958 (-CH3), 2870 (-CH2), 1725 (>CO), 1712
(>CO), 1605, 1500, 1470, 1429 (Ar-H, ben), 1310 (C-N, Ar, 3°), 1092 (C-O-C),
995 (C-F), 837 (1,4-di sub); MS m/z = 452 (M + ); Anal. Calcd. for C27H17FN2O4:
C, 71.68; H, 3.79; N, 6.19. Found: C, 71.70; H, 3.80; N, 6.15.
3-[(1, 3-DIPHENYL-1H-PYRAZOL-4-YL) METHYLENE]-2H-CHROMENE-2,
4(3H)-DIONE (DNJ-901): IR (KBr, cm -1 ): 2966 (-CH3), 2866 (-CH2), 1732
(>CO, lactam ring), 1666 (>CO), 1608, 1560, 1508, 1470 (Ar-H, ben), 1380
(C-N, Ar, 3°), 1115 (C-O-C); MS m/z = 392 (M + ); Anal. Calcd. for C25H16N2O3:
C, 76.52; H, 4.11; N, 7.14. Found: C, 76.57; H, 4.15; N, 7.18.
3-{[3-(4-NITROPHENYL)-1-PHENYL-1H-PYRAZOL-4-YL] METHYLENE}-
2H-CHROMENE-2, 4(3H)-DIONE (DNJ-902): IR (KBr, cm -1 ): 2959 (-CH3),
2866 (-CH2), 1730 (>CO, lactam ring), 1670 (>CO), 1610, 1560, 1503, 1455
(Ar-H, ben), 1385 (C-N, Ar, 3°), 1105 (C-O-C), 840 (1,4-di sub); MS m/z = 437
(M + ); Anal. Calcd. for C25H15N3O5: C, 68.65; H, 3.46; N, 9.61. Found: C,
68.60; H, 3.50; N, 9.65.
Department of Chemistry, Saurashtra University, Rajkot – 360 005 247