| abstract |
THE INVENTION IS RELATED TO A PROCEDURE FOR THE PREPARATION OF NEW PIPERAZINE DERIVATIVES 1,4-DISSTITUTED IN A GENERAL FORMULA IN WHICH R1, R2, R3 AND R4 ARE THE SAME OR DIFFERENT AND REPRESENT HYDROGEN, HALOGENO, ALIROXYLENE, OR NITRO, HYDROXYL, ARALKYL OR 1- (2-PROPENYL-4-PIPERAZINYL); R5 REPRESENTS HYDROGEN OR A C1-4 ALKYL GROUP; R6 REPRESENTS A GROUP C3-6 ALKYL, ALKYLN, ALKYNIL; AND N IS 2 OR 3, WITH THE CONDITIONS THAT: R6 IS DIFFERENT FROM AN ISOPROPYL GROUP, N-BUTYL AND ISOBUTYL, WHEN R2, R3, R4 AND R5 REPRESENT HYDROGEN, R1 MEANS 2-CHLORINE AND N IS 2; R6 IS DIFFERENT FROM AN ISOPROPYL GROUP WHEN R2, R3, R4 AND R5 REPRESENT HYDROGEN, R1 MEANS 2-CHLORINE AND N IS 2; OR WHEN R2, R3, R4 AND R5 REPRESENT HYDROGEN, R1 MEANS A GROUP 2-METHYL AND N IS 2; AND R6 IS DIFFERENT FROM A PROPIONYLL GROUP WHEN R1, R2, R3, R4 AND R5 ARE HYDROGEN AND NO MEAN |