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Synthesis of New Schiff bases Derivatives from 1, 3, 4-Thiadiazole and it's Resins | ||
| Al-Mustansiriyah Journal of Science | ||
| Article 1, Volume 22, Issue 4, 2011, Pages 102-110 | ||
| Author | ||
| Redha I. AL-Bayati | ||
| Abstract | ||
| Starting from 2-amino-5mercapto-1, 3, 4-thiadiazole (1) which prepared from thiosemicarba zide and CS2 in the presence of anhydrouse Na2Co3, the Schiff base (2) prepared from corresponding (1) with p-hydroxy benzaldehyde. Compound (3) was obtained from the reaction of compound (2) with hydrazine hydrate and then converted into compound (4) by refluxing with phenylthioisocyanate in boiling ethanol about 7h. Treatment compound (4) with formaldehyde in the presence of NaOH afforded the corresponding methylolic phenolic resin (5) which upon treating with methanol or butanol in the presence of conc. H2SO4 gave etheric resins (6,7) respectively. The epoxy resins (8,9) were prepared from the corresponding etheric resins with eipychlorohydrine in the presence of NaOH. Finally reaction of appropriate epoxy resin (9) with morpholine leads to ring open giving resin with unstitched ring (10). | ||
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