| 摘要 |
1-Substituted-5(4H)-tetrazolinones of the formula (I) <IMAGE> (I) wherein R is alkyl, haloalkyl, cycloalkyl, phenyl, substituted phenyl or aralkyl, are obtained in very good yields by reacting, in a polar solvent, an isocyanate of the formula R-NCO (II) with sodium azide (NaN3) in a molar ratio of 1:1 and in the presence of aluminum chloride (AlCl3), followed by the addition of water and a mineral acid in excess.
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