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Chapter – 4 Studies on different types of reactions…..<br />

4.10.3 Physical data of (3E)-3-{[3-(substituted phenyl)-1-phenyl-1H-<br />

pyrazol-4-yl] methylene}-2H-chromene-2, 4(3H)-dione (DNJ-901 to<br />

DNJ-905)<br />

Code<br />

Substitution<br />

R<br />

MF<br />

MW<br />

(g/m)<br />

MP<br />

(°C)<br />

DNJ-901 4-NO2 C25H15N3O5 437 162-164 0.45<br />

DNJ-902 3-NO2 C25H15N3O5 437 170-172 0.47<br />

DNJ-903 H C25H16N2O3 392 158-160 0.40<br />

DNJ-904 4-Cl C25H15ClN2O3 426 178-180 0.50<br />

DNJ-905 4-F C25H15FN2O3 410 184-186 0.42<br />

Rf value was calculated using solvent system = Hexane : Ethyl Acetate (6<br />

: 4)<br />

O O<br />

O<br />

N<br />

Department of Chemistry, <strong>Saurashtra</strong> <strong>University</strong>, Rajkot – 360 005 232<br />

N<br />

R<br />

Rf

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