abstract |
Enaminocarbonyl compounds of formula (I) ** Formula ** in which A represents 6-chloro-pyrid-3-yl, 6-brom-pyrid-3-yl or 6-chloro-1,4-pyridazin-3- il; B represents OCH3, OCH2CH3, OCH (CH3) 2; D represents a T-R5 moiety, where T represents oxygen and R5 represents methylcarbonyl, ethylcarbonyl, tert-butylcarbonyl or methoxycarbonyl; R1 represents methyl, cyclopropyl or 2,2-difluoro-ethyl; and R2 and R3 each represent hydrogen. |