| abstract |
PROCEDURE FOR OBTAINING SUBSTITUTED ISOXAZOLIDINES. IT CONSISTS OF REACTING HYDROXYLAMINES OF FORMULA R3-NH-OH WITH FORMALDEHYDE AND ALKENES OF FORMULA (II) TO OBTAIN SUBSTITUTED ISOXAZOLIDINES OF FORMULA (I) WHERE R1 IS ALKYL, CYCLOALKYL, AND OTHRALKYL; R4 IS ALKYL, ARYL, ALCOXY, ALKYLTIO AND OTHERS; R2 IS H, R1 AND R2 MAY BE THE SAME OR DIFFERENT AND R3 IS ALKYL, CYCLOALKYL, ALKENYL, ALKINYL, ARYL, ARALKYL AND OTHERS; AND IN A SECOND STAGE, THE FORMUAL (I) SUBSTITUTED ISOXAZOLIDINES ARE MIXED WITH THE FEED, USUAL ADDITIVES TO THE FEED, LOADING MEDIA OR AUXILIARY AGENTS. THE REACTION IS EFFECTED IN A THINNER SUCH AS TOLUENE, XYLENE, BENZENE AND OTHERS, AND AT A TEMPERATURE OF 0 TO 100JC. THEY ARE USED TO FIGHT PESTS AND AS A MEANS TO INCREASE THE USE OF FEED BY ANIMALS. |