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Synthesis ,characterization and study thermal properties of some new .benzidine derivatives | ||
| Almuthanna Journal of Pure Science (MJPS) | ||
| Article 1, Volume 1, Issue 1, 2013, Pages 0-0 | ||
| Author | ||
| Hutham M. Yousif Ezat.H.Zmam | ||
| Abstract | ||
| New 1,3-oxazepine derivatives containing azo group have been prepared. The first step, ( benzidine) was converted to 4,4'-bis(3-amino phenol)Azobenzidine [A]. by coupling reaction with 3-amino phenol, Then amino group of the azo derivative [A] was condensed with different aromatic aldehydes [4-chlrobenzaldehyde,3-hydroxybenzaldehyde,p-dimethyleaminobenzaldehyde, 4 bromobenzaldehyde,4-hydroxy-3-methoxybenzaldehyde,4-chloro-3-hydroxybenzaldehyde, 3,4-dimethylbenzaldehyde, and 4-hydroxybenzaldehyde ] in absolute ethanol to give new azo Schiff,s bases derivatives [B1-B8] respectively. The resulting imines derivatives [B1- B8] were reacted with maleic anhydride and phathalic anhydride in dry benzene to give new 1,3-oxazepine-4,7-dione ring derivatives[C1a-C8a]and[C1b-C8b] respectively. For the last derivatives thermal properties were determind by using Thermo gravimetric analysis (TGA),All these compounds were characterized by melting points and FT.IR spectroscopy, some of them were characterized by1H-NMR spectroscopy ,C.H.N analysis and TGA analysis. | ||
| Keywords | ||
| KEYWORDS; Azo compound; Schiff; s bases; oxazepine; thermal properties | ||
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