abstract |
1,4-Disubstituted-5(4H)-tetrazolinones of the formula (I)n n (wherein R¹, R² and R³ have the meanings given in the specification), which are known to be useful as herbicides, can be obtained in very good yields by reacting the corresponding 1-substituted-5(4H)-tetrazolinones with the corresponding carbamoyl chlorides in the presence of 4-dimethylaminopyridine. |