| abstract |
THIS INVENTION REFERS TO A NEW PROCEDURE FOR THE PREPARATION OF ESTERS, ACTIVE AS INSECTICIDES, OF THE GENERAL FORMULA (I): WHERE THE RADICALS HAVE THE MEANINGS GIVEN IN THE MEMORY, WHICH IS A PROCEDURE IN A STAGE THAT CONSISTS OF DIRECTLY CONDENSING ACID ORGANIC, AN ALDEHYDE (AND A WATER-SOLUBLE CYANIDE), IN THE PRESENCE OF A PHASE TRANSFER CATALYST AND A WATER-SOLUBLE INORGANIC BASE, USING A SULPHONYL COMPOUND AS A CONDENSING REAGENT. |