Cyclohexenone compounds, their preparation and their use as herbicides or as plant growth regulators

Abstract From the Canadian patent

Disclosed are new cyclohexenone compounds of the formula I:, (I), where R1 is hydrogen; C1-C6-alkyl which is unsubstituted or substituted by C1-C4-alkoxy, C1-C4-alkylthio C1-C4-dialkylamino, hydroxyl or haloqen; C2-C6-alkenyl; C3-C6-cycloalkyl; or phenyl or benzyl which is unsubstituted or substituted by halogen C1-C4-alkyl, C1-C4-alkoxy or nitro, R2 is C1-C4-alkyl or cyclopropyl, A is oxygen; a radical NOR3 where R3 is C1-C4-, alkyl, C3- or C4-alkenyl C3,- or C4-alkynyl, C2-C4-haloalkyl, C3- or C4-haloalkenyl or C2-C4-alkoxyalkyl; or a radical NR4 where R4 is hydrogen, C1-C6-alkyl, C1-C4-hydroxyalkyl C1-C4-, alkoxyalkyl, benzyl or phenyl, X is hydroxyl; chlorine; C1-C6alkylthio which is …