87821-75-8Relevant academic research and scientific papers
Preparation method of tralkoxydim
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, (2021/06/26)
The invention discloses a method for preparing tralkoxydim. The method comprises the following steps: preparing a first intermediate from 2,4,6-trimethylbenzaldehyde and acetone; preparing a second intermediate from the first intermediate, diethyl malonate and propionyl chloride; and preparing tralkoxydim by utilizing the second intermediate and ethoxyamine, wherein in the process of preparing the second intermediate, a condensation reaction and a rearrangement reaction are carried out at the same time, and after the first intermediate is prepared and before tralkoxydim is prepared, separation or purification treatment is not carried out. According to the invention, tralkoxydim is prepared by simultaneously carrying out condensation and rearrangement reactions and not carrying out a separation or purification process in the reaction process, so the steps of multiple times of separation, purification, transfer, feeding and the like in existing preparation methods are omitted, time and labor are saved, the consumption of reagents is reduced, a large amount of cost is saved, and the problems that a tralkoxydim preparation method is complex in step, product yield is low and layering emulsification is serious in an esterification reaction process in the prior art are solved.
Herbicidal cyclohexane-1,3-dione derivatives
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, (2008/06/13)
The invention concerns novel compounds of the formula I STR1 wherein R1 is selected from hydrogen, alkyl, alkenyl, alkynyl, substituted alkyl, acyl, alkylsulfonyl, benzenesulfonyl, substituted benzenesulfonyl, and an inorganic or organic cation; R2 is selected from alkyl, alkenyl, alkynyl, substituted alkyl, haloalkenyl and haloalkynyl; R3 is selected from alkyl, fluoroalkyl, alkenyl, alkynyl and phenyl; and n is an integer chosen from 2 to 5. The compounds are cereal selective herbicides and in further embodiments of the invention provides processes for the preparation of compounds of formula I, intermediates useful in the preparation of compounds of formula I, herbicidal compositions containing as active ingredient a compound of formula I, and processes for severely damaging or killing unwanted plants by applying to the plants or to the growth medium of the plants an effective amount of a compound of formula I.
Herbicidal 5-(acylphenyl)cyclohexane-1,3-dione derivatives
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, (2008/06/13)
The invention concerns novel compounds of the formula I STR1 wherein: W are selected from the group consisting of: the groups R5 --CO-- and R5 --CS-- wherein: R5 is selected from alkenyl, alkynyl, benzyl, phenyl, substituted alkyl, substituted alkenyl, substituted alkynyl, substituted benzyl, substituted phenyl and the acetal, hemiacetal, oxime, imine and Schiff base derivatives of the group R5 --CO--; the groups Y--CO-- and Y--CS-- wherein Y is selected from hydroxy, mercapto, alkylthio and the groups MO-- and MS-- wherein M is an organic or an inorganic cation; the groups R6 R7 NCO-- and R6 R7 NCS-- wherein R6 and R7 are independently selected from hydrogen, alkyl, substituted alkyl, alkanoyl, carboxy, alkoxycarbonyl, alkylsulfonyl, benzoyl, benzenesulfonyl, substituted benzoyl, substituted benzenesulfonyl, or R6 and R7 form a heterocyclic ring; X are selected from halogen, nitro, cyano, alkyl, substituted alkyl, hydroxy, alkoxy, substituted alkoxy, alkenyl, alkenyloxy, alkynyl, alkynyloxy, acyloxy, alkoxycarbonyl, alkylthio, alkylsulfinyl, alkylsulfonyl, sulfamoyl, substituted sulfamoyl, alkanoyloxy, benzyloxy, substituted benzyloxy, amino, substituted amino, and the groups formyl and alkanoyl and the acetal, hemiacetal, oxime, imine and Schiff base derivatives thereof; R1 is selected from hydrogen, alkyl, alkenyl, alkynyl, substituted alkyl, alkylsulfonyl, arylsulfonyl, acyl and an inorganic or organic cation; R2 is selected from alkyl, substituted alkyl, alkenyl, haloalkenyl, alkynyl and haloalkynyl; R3 is selected from alkyl, fluoroalkyl, alkenyl, alkynyl, and phenyl; R4 is selected from hydrogen, halogen, alkyl, cyano and alkoxycarbonyl; m is selected from integers 1 and 2; n is selected from the integers 1 to 4; and m+n is selected from the integers 3 to 5. The compounds of the invention show herbicidal properties and plant growth regulating properties and in further embodiments the invention provides processes for the preparation of compounds of formula I, intermediates useful in the preparation of the compounds of formula I, compositions containing as active ingredient a compound of formula I, and herbicidal and plant growth regulating processes utilizing compounds of formula I.
Cyclohexenone derivatives and their herbicidal use.
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, (2008/06/13)
The invention concerns novel compounds of the formula I STR1 wherein: X is selected from halogen, nitro, cyano, alkyl, substituted alkyl, hydroxy, alkoxy, substituted alkoxy, alkenyl, alkynyl, alkenyloxy, alkynyloxy, acyloxy, alkoxycarbonyl, alkylthio, alkylsulfinyl, alkylsulfonyl, sulfamoyl, substituted sulfamoyl, amino, substituted amino, and the groups formyl and alkanoyl and the oxime, imine and Schiff base derivatives thereof; R1 is selected from hydrogen, alkyl, alkenyl, alkynyl, substituted alkyl, alkylsulfonyl, arylsulfonyl, acyl and an inorganic or organic cation; R2 is selected from alkyl, substituted alkyl, alkenyl, haloalkenyl, alkynyl and haloalkynyl; R3 is selected from alkyl, fluoroalkyl, alkenyl, alkynyl, and phenyl; m is an integer chosen from 3 to 5. The compounds of the invention show herbicidal properties and plant growth regulating properties and in further embodiments the invention provides processes for the preparation of compounds of formula I, intermediates useful in the preparation of the compounds of formula I, compositions containing as active ingredient a compound of formula I, and herbicidal and plant growth regulating processes utilizing compounds of formula I.
