FORMATION OF 4,5-DIHYDRO-1,2,4-TRIAZOLES DURING REARRANGEMENT OF O-ACETYL DERIVATIVES OF 1,2-HYDROXYLAMINOHYDRAZONES AND THIOSEMICARBAZONES

Article abstract of DOI:10.1007/BF00514996

Acylation of phenylhydrazone, semicarbazone, and thiosemicarbazones of 1,2-hydroxylamino-ketones containing a hydroxylamine group at the tertiary carbon atom, by acetic anhydride, leads to products of O-acylation at the hydroxylamine group, which in alkal