Synthesis of Photoactive Polyureas Derived from 4-(4-Dimethylaminophenyl)-1,2,4-triazolidine-3,5-dione and Diisocyanates
✍ Scribed by Shadpour Mallakpour; Zahra Rafiee
- Publisher
- Springer
- Year
- 2005
- Tongue
- English
- Weight
- 287 KB
- Volume
- 56
- Category
- Article
- ISSN
- 0170-0839
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## Abstract 4‐(4′‐Aminophenyl)‐1,2,4‐triazolidine‐3,5‐dione was reacted with 1 mol of acetyl chloride in dry __N,N__‐dimethylacetamide (DMAc) at −15°C and 4‐(4′‐acetamidophenyl)‐1,2,4‐triazolidine‐3,5‐dione [4‐(4′‐acetanilido)‐1,2,4‐triazolidine‐3,5‐dione] (APTD) was obtained in high yield. The rea
A traceless synthesis of 1,2,4-triazolidine-3,5-diones has been achieved through cyclo-elimination from solid-phase. This traceless cyclo-elimination release step is induced by catalytic amount of base or by simply refluxing the urea carbamate intermediate.