62256-38-6Relevant articles and documents
Oxidation of Aldehyde Semicarbazones with Lead Dioxide: Application to the Syntheses of 2-Amino-1,3,4-oxadiazoles and 2,4-Dihydro-1,2,4-triazol-3-ones
Nguyen, Thu-Huong,Milcent, Rene,Barbier, Geo
, p. 1383 - 1388 (2007/10/02)
The oxidation of aldehyde semicarbazones with lead dioxide in acid media was effected.The 4,4-disubstituted semicarbazones of aromatic aldehydes afford 2-amino-1,3,4-oxadiazole derivatives.The 2,4-disubstituted semicarbazones give 2,4-dihydro-1,2,4-triazo