摘要 |
The invention concerns the preparation of 3-(3,4,5,6-tetrahydrophthalimido)cinnamic acid esters of formula (I) (R<1> = H, halogen; R<2>, R<3> = halogen; R<4> = C-organic rest; R<5> = H, CH3) by the reduction of 3-nitrocinnamic acid esters of formula (II) with hydrogen in the presence of a catalyst and the condensation of the 3-aminocinnamic acid esters obtained of formula (III) with a 3,4,5,6-tetrahydrophthalic acid anhydride of formula (IV). 3-(3,4,5,6-tetrahydrophthalimido)cinnamic acid esters of formula (I) are useful active agents in the plant-protection field.
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申请人 |
BASF AG, 6700 LUDWIGSHAFEN, DE |
发明人 |
RUEB, LOTHAR, DR., 6720 SPEYER, DE;EICKEN, KARL, DR., 6706 WACHENHEIM, DE;SCHAEFER, BERND, DR., 6749 DIERBACH, DE;REISSENWEBER, GERNOT, DR., 6737 BOEHL-IGGELHEIM, DE;SCHAEFER, PETER, DR., 6702 BAD DUERKHEIM, DE |