| 摘要 |
Process for making 1,1-dihalo-4-methyl-1,3-pentadiene compounds which process comprises reacting a 2-2-dimethyl-3,5,5,5-tetrahelogenopent-1-yl derivative of the formula <IMAGE> (I), in which Hal1 is defined as above, Hal2 is halogen, and R is hydrogen or alkanoyl of up to 5 carbon atoms with a substance having a basic reaction in a temperature range from 20 DEG to 160 DEG C. Certain intermediates produced in such process can also be used as the initial starting material.
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