| 摘要 |
Novel fluorinated thiocarbonic acid ester-fluorides of the formula <IMAGE> (I) in which R1 represents alkyl, cycloalkyl or optionally substituted aryl and R2 and R3 independently of one another represent hydrogen or alkyl, or R1 and R2 together represent an alkylene chain, a new process for the preparation of the new compounds and their use as intermediates for the preparation of compounds having herbicidal properties. Novel intermediates of the formulae <IMAGE> in which R2 and R3 have the above-mentioned meaning, R4 is optionally substituted aryl, R5 is alkyl or cycloalkyl, and X is fluorine or chlorine, at least one X representing chlorine.
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