RSC Advances
Page 10 of 13
DOI: 10.1039/C5RA03528G
mentioned in earlier reports. The MFA comprises the porous crystalline nature having ferrous
silicate constituent in which the iron and silicon are connected with oxygen bridges just like a zeolite.
The replacement of homogeneous acid catalyst by solid acid catalyst is the main achievement
of the present study as summarised in Table 2.
Characterizations of Synthesized derivatives
3a: (E)ꢀN’ꢀbenzylidene isonicotinohydrazide, Melting Point = 204ꢀ206oC, m/z =, Mass
Analysis, base peak = M+1, H1 NMR (DMSO, 400 MHz), δH = 1H (S 12.09), 2H (dd 8.76,
5.6 Hz, 16 Hz, 4 Hz) 1H (S 8.47), 2H (dd 7.83, 2.4 Hz, 2.8 Hz, 1.6 Hz) 2H (dd 7.75, 2.8 Hz,
5.2 Hz, 1.6 Hz) 3H (m 7.49, 0.4 Hz, 3.2 Hz, 5.2 Hz, 4.4 Hz, 2 Hz, 3.2 Hz, 1.6 Hz), C13 NMR
(DMSO, 100 MHz) δC = 162.09, 150.81, 149.49, 140.93, 134.48, 130.87, 129.37, 127.74,
122.
3b: (E)ꢀN’ꢀ(4ꢀhydroxybenzylidene) isonicotinohydrazide, Melting Point = 190ꢀ192oC, m/z =
Mass Analysis, base peak = M+1, H1 NMR (DMSO, 400 MHz), δH = 1H (S 11.80), 1H (S
9.88), 2H (Broad S 8.76), 1H (S 8.37), 2H (d 7.83, 3.68 Hz), 2H (d 8.22), 2H (d 7.85, 8.56
Hz), 2H (dd 6.80, 8.52 Hz, 8.36 Hz, 17.84 Hz), C13 NMR (DMSO, 100 MHz) δC = 161.25,
159.68, 150.04, 149.36, 140.55, 128.94, 128.44, 124.85, 121.40, 115.59.
3c: (E)ꢀN’ꢀ(2ꢀhydroxybenzylidene) isonicotinohydrazide, Melting Point = 202ꢀ204oC, m/z =
Mass Analysis, base peak = M+1, H1 NMR (DMSO, 400 MHz), δH = 1H (S 12.29), 1H (S
11.17), 2H (dd 8.75, 5.64 Hz, 4.68 Hz, 18.12 Hz), 1H (S 8.67), 2H (d 7.85, 4.6 Hz, 1.32 Hz),
1H (m 7.54, 1.2 Hz, 1.2 Hz, 6.44 Hz), 1H (m 7.29, 7 Hz, 7.04 Hz, 1.48 Hz), 2H (dd 6.92, 8
Hz, 7.44 Hz, 7.12 Hz), C13 NMR (DMSO, 100 MHz) δC = 161.16, 157.62, 150.17, 149.47,
139.79, 131.46, 129.58, 121.37, 119.15, 118.32, 116.37.
3d: (E)ꢀN’ꢀ(3ꢀhydroxybenzylidene) isonicotinohydrazide, Melting Point = more than 250oC,
m/z = Mass Analysis, base peak = M+1, HRMS Analysis, C13H12O2N3 = 242.0924, Base
peak = 242.0928, H1 NMR (DMSO, 400 MHz), δH = 1H (S 11.99), 1H (S 9.57), 2H (d 8.76,
4.2 Hz), 1H (S 8.39), 2H (d 7.23, 3.2 Hz, 8.2 Hz), 1H (d 7.12, 7.6 Hz), 1H (d 6.86, 1.64 Hz),
1H (d 6.84, 1.72 Hz), C13 NMR (DMSO, 100 MHz) δC = 162.04, 158.17, 150.8, 149.57,
140.95, 135.74, 130.43, 121.99, 119.49, 118.23, 113.18.
3e: (E)ꢀN’ꢀ(2ꢀnitrobenzylidene) isonicotinohydrazide, Melting Point = 226ꢀ228oC, m/z = 270,
Mass Analysis, base peak = M+1, C13H11O3N4 = 271.0826, Base peak = 271.0832, H1 NMR
(DMSO, 400 MHz), δH = 1H (S 12.39), 1H (S 8.95), 2H (d 8.78, 5.76 Hz), 1H (t 8.19, 3.76
Hz, 4.12 Hz), 1H (d, 8.08, 8 Hz), 2H (d 7.86, 5.84 Hz), 2H (d 7.80, 7.56 Hz, 7.64 Hz), 1H (d
7.69, 6.24 Hz), 1H (7.65, 0.92 Hz), C13 NMR (DMSO, 100 MHz) δC = 161.76, 150.12,
148.17, 144.16, 139.9, 133.49, 130.64, 128.08, 124.48, 121.42.
3f: (E)ꢀN’ꢀ(4ꢀnitrobenzylidene) isonicotinohydrazide, Melting Point = 240ꢀ242oC, m/z = 270,
Mass Analysis, base peak = M+1, H1 NMR (DMSO, 400 MHz), δH = 1H (S 12.36), 2H
(Broad S 8.81), 1H (S 8.59), 1H (d 8.3), 1H (d 8.22), 2H (d 8.03), 2H (d 7.86).
3g: (E)ꢀN’ꢀ(anthraceneꢀ9ꢀylmethylene) isonicotinohydrazide, Melting Point = more than
250oC, m/z = 325, Mass Analysis, base peak = M+1, HRMS Analysis, C21H16ON3 =