2 results about "Propamidine" patented technology

The invention provides a compound composition of propamidine and tetraconazole, a bactericide and application. The composition comprises propamidine and tetraconazole, and the mass ratio of propamidine to tetraconazole is (1-10): (10-1). Propamidine and tetraconazole are compounded to be used for preventing and treating corn northern leaf blight, powdery mildew of fruits, vegetables and grains, gray mold, rice blast and other crop fungal diseases, an obvious synergistic interaction effect is achieved, the dosage of the pesticide can be remarkably reduced, and the compounded preparation has the potential of being developed into a new generation of environment-friendly, efficient and low-toxicity agricultural fungicide.

The application discloses a method for preparing propafenone, and belongs to the technical field of drug synthesis. The method comprises the following steps: (1) taking 4-bromoguaiacol as raw material to perform etherification reaction with N,N-diethylchloroacetamide to obtain an intermediate A; (2) performing cross coupling reaction on the intermediate A and dipropyl malonate under the catalysis of a copper / oxamide ligand combination system to obtain an intermediate B; and (3) performing decarboxylation on the intermediate B by heating to obtain the propafenone. The raw material is cheap and easy to obtain, the route is short, the operation is simple, and the method has good industrial application value.