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| 4-Phenylurazole Basic information |
| Product Name: | 4-Phenylurazole | | Synonyms: | AURORA KA-3647;4-PHENYLTETRAHYDRO-1,2,4-TRIAZOLE-3,5-DIONE;4-PHENYLURAZOLE;4-PHENYL-1,2,4-TRIAZOLANE-3,5-DIONE;4-PHENYL-1,2,4-TRIAZOLIDINE-3,5-DIONE;1,2,4-Triazolidine-3,5-dione, 4-phenyl-;1,2,4-Triazolidine-3,5-dione,4-phenyl-;2,4-Triazolidine-3,5-dione,4-phenyl-1 | | CAS: | 15988-11-1 | | MF: | C8H7N3O2 | | MW: | 177.16 | | EINECS: | 240-127-0 | | Product Categories: | Building Blocks;Chemical Synthesis;Naphthyridine,Quinoline;Heterocyclic Building Blocks;Triazoles | | Mol File: | 15988-11-1.mol |
| 4-Phenylurazole Chemical Properties |
| Safety Statements | 22-24/25 | | WGK Germany | 3 | | TSCA | Yes | | HS Code | 29339990 |
| 4-Phenylurazole Usage And Synthesis |
| Description | 4-phenylurazole is a kind of laboratory chemicals used for the manufacturing of some substances. It can be used as the precursor to the Diels-Alder trapping agent, 4-phenyl-1, 2, 4-triazoline-3, 5-Dione. Its derivative, azo dyes, has wide applications in dyes industry. In the presence of phosgene, terephthaloyl chloride and epichlorohydrin, it can be polymerized to yield insoluble polymer.
| | Chemical Properties | white to light beige cryst. powder or granules | | Uses | Precursor to the Diels-Alder trapping agent, 4-phenyl-1,2,4-triazoline-3,5-dione.1,2,3 | | General Description | 4-Phenylurazole undergoes oxidation in the presence of NO2-N2O4 to yield 4-phenyl-1,2,4-trizoline-3,5-dione. It undergoes acetylation reaction with excess acetyl chloride in N,N-dimethylacetamide solution. It polymerizes in the presence of phosgene, terephthaloyl chloride and epichlorohydrin to yield insoluble polymer. It is precursor to the Diels-Alder trapping agent, 4-phenyl-1,2,4-triazoline-3,5-dione. This urazole was recently demonstrated in the traceless, chemoselective labeling of peptides and proteins through electrochemical tyrosine-click (e-Y-CLICK) chemistry. | | Purification Methods | Crystallise 4-phenylurazole from water or 95% EtOH. Dissolve 35g in 80mL of boiling 95% EtOH and on cooling 90-95% is recovered with m 209-210o. It has IR with 1685 and 3120cm-1. [Cookson et al. Org max Synth 51 121 1971, Beilstein 26 I 64, 26 III/IV 540.] | | References | http://www.sigmaaldrich.com/catalog/product/aldrich/188956?lang=en®ion=US&gclid=EAIaIQobChMI6r7k0eu71gIV1IZoCh0nwgLjEAAYASAAEgI0tvD_BwE
http://nopr.niscair.res.in/handle/123456789/21799
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| 4-Phenylurazole Preparation Products And Raw materials |
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