| abstract |
PROCESS FOR PREPARING 1,1-DICHLORO-4-METHYL-1,3-PENTADIENE. CHLORAL AND ISOBUTYLENE ARE REACTED, WHICH GIVES THE 1,1,1-TRICHLORO-2-HYDROXY-4-METHYL-3-PENTENE OF FORMULA I: (CF DRAWING IN BOPI) THAT WE DONE HIMSELF REACT WITH THIONYL CHLORIDE, PREFERABLY IN THE PRESENCE OF A CATALYST, WITHOUT SOLVENT OR IN AN INERT SOLVENT, THE REACTION GIVING 1,1,1,4-TETRACHLORO-4-METHYL-2-PENTENE WHICH IS FINALLY SUBMITTED REDUCTION. THE PROCESS ACCORDING TO THE INVENTION GIVES THE RESEARCH COMPOUND FROM SIMPLE STARTING PRODUCTS AND WITH AN ALMOST QUANTITATIVE YIELD. |