申请人:IMPERIAL CHEMICAL INDUSTRIES PLC
公开号:EP0066943A1
公开(公告)日:1982-12-15
These compounds have the general formula:
wherein R and R', which may be the same or different, are hydrogen or alkyl, preferably C1-C4 alkyl, and X, Y and Z are each independently hydrogen, chlorine or fluorine, provided that when R, R' and Z are hydrogen, X and Y are not both hydrogen or both fluorine, and are prepared by dehydrating an alcohol of the formula:
by, for example, heating the alcohol in the presence of a catalytic amount of a strong acid such as p-toluenesulphonic acid and preferably in the presence of an inert solvent.
The compounds are intermediates for the preparation of fungicidal compounds.
这些化合物的通式为:其中 R 和 R'(可以相同或不同)为氢或烷基,最好是 C1-C4 烷基,X、Y 和 Z 各自独立地为氢、氯或氟,但当 R、R'和 Z 均为氢时,X 和 Y 不能同时为氢或同时为氟。 这些化合物是制备杀菌化合物的中间体。