4-Phenylurazole synthesis
- Product Name:4-Phenylurazole
- CAS Number:15988-11-1
- Molecular formula:C8H7N3O2
- Molecular Weight:177.16
58979-78-5
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15988-11-1
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Yield:15988-11-1 88%
Reaction Conditions:
with potassium hydroxide in lithium hydroxide monohydrate at 100; for 1 h;
Steps:
General procedure: A flame-dried 50 mL round bottom flask equipped with a magnetic stirring bar and equipped with condenser, A mixture of above prepared semi carbazides 20 in 1M potassium hydroxide (20 mmol, 2.0 equiv) was heated to 100 °C and stirred for 1h. After completion, reaction mixture was cooled to 25 °C and acidified using concentrated hydrochloric acid to pH ~2, resulted solid was filtered and dried to get 4-aryl-1,2,4-triazolidine-3,5-diones 21a-l. Compared the analytical data of 4-aryl-1,2,4-triazolidine-3,5-diones 21a-g and 21j and found perfect match with literature data.[a-f]
References:
Panga, Subhaskar R.;Hall, Roger G.;Samant, Rashmi V.;Montgomery, Mark;Shyadligeri, Ashok S. [Tetrahedron Letters,2022,vol. 106,art. no. 154076] Location in patent:supporting information
17696-94-5
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15988-11-1
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4233-33-4
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15988-11-1
174 suppliers
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