摘要 |
The present invention relates to a process for the preparation of compounds of formula (I) wherein Rand Rare each independently of the other hydrogen or C-Calkyl and Ris CFor CFH, by a) reaction of a compound of formula (II) wherein Rand Rare as defined for formula (I), with at least one reducing agent to form a compound of formula (III) wherein Rand Rare as defined for formula (I), and b) reaction of that compound with at least one reducing agent to form a compound of formula (IV) wherein Rand Rare as defined for formula (I), and (c) reaction of that compound with a compound of formula (V) wherein Q is chlorine, fluorine, bromine, iodine, hydroxy or C-Calkoxy and Ris as defined for formula (1), to form the compound of formula (I); and to novel intermediates for use in that process. |
申请人 |
SYNGENTA PARTICIPATIONS AG;SYNTENTA LIMITED |
发明人 |
TOBLER, HANS;EHRENFREUND, JOSEF;GIORDANO, FANNY;SEIFERT, GOTTFRIED;GEORGE, NEIL;BONNETT, PAUL;WALTER, HARALD;CORSI, CAMILLA;ZELLER, MARTIN;SHAH, SHAILESH C.;JONES, IAN |