Abstract: This invention provides a microreactor comprising a microchamber provided with a raw material introduction port and a product discharge port; wherein solid catalysts are aligned in a line in the longitudinal direction of the microchamber to fill the microchamber.

Abstract: This invention provides a microreactor comprising a microchamber provided with a raw material introduction port and a product discharge port; wherein solid catalysts are aligned in a line in the longitudinal direction of the microchamber to fill the microchamber.

Abstract: The present invention provides a method for preparing an organic compound, which comprises a dehydration step of distilling off water from a polar organic solvent solution containing the organic compound and water to bring the concentration of water below a given level, wherein the dehydration step comprises distilling off water together with the polar organic solvent while adding a polar organic solvent to the solution, or comprises repeating several cycles of adding a polar organic solvent to the solution and then distilling off water together with the polar organic solvent. The present invention further provides the preparation of an organic compound, which enables efficient isolation of the target product in high isolated yield from a polar organic solvent solution containing the organic compound, water and, if necessary, a compound which produces, upon coming into contact with water or the like, a substance accelerating the decomposition of the organic compound.

Abstract: Processes for producing a compound represented by the formula (1), which includes an acrylic acid derivative and is useful as an agricultural chemical or medicine. One of the processes comprises the step of formulating a compound (3) and converting the OH of the resultant compound (2) into OR?. The first step comprises reacting a formic or orthoformic ester in the presence of a Lewis acid and a base. The second step comprises reacting the compound with R?OH or with R?OH and CH(OR?)3 under acidic conditions or using a phase-transfer catalyst in a two-phase system and regulating the base and the concentration thereof to stereoselectively synthesize the target compound. In another, process, the compound is efficiently produced without isolating the compound. The compound can also be produced without the compound (2).

Abstract: There is provided a method by which various compounds (1) having a carboxyl group in the molecule have the carboxyl group converted to a (dioxolenon-4-yl)methyl ester at low cost, in a simple way and at high yield. The process for producing compounds of formula (3) according to the reaction scheme shown below comprises reacting carboxylic acids of formula (1) with 4-chloromethyldioxolenone compounds of formula (2) in a solvent in the presence of both a phase transfer catalyst and a metal iodide: [where Q represents an organic group, M represents a hydrogen atom, an alkali metal, an alkaline earth metal or a transition metal, R1 and R2 represent a hydrogen atom, an optionally substituted (C1-6 alkyl group or phenyl group)].

Abstract: The present invention provides a method for preparing an organic compound, which comprises a dehydration step of distilling off water from a polar organic solvent solution containing the organic compound and water to bring the concentration of water below a given level, wherein the dehydration step comprises distilling off water together with the polar organic solvent while adding a polar organic solvent to the solution, or comprises repeating several cycles of adding a polar organic solvent to the solution and then distilling off water together with the polar organic solvent. The present invention further provides the preparation of an organic compound, which enables efficient isolation of the target product in high isolated yield from a polar organic solvent solution containing the organic compound, water and, if necessary, a compound which produces, upon coming into contact with water or the like, a substance accelerating the decomposition of the organic compound.

Abstract: Processes for producing a compound represented by the formula (1), which includes an acrylic acid derivative and is useful as an agricultural chemical or medicine. One of the processes comprises the step of formulating a compound (3) and converting the OH of the resultant compound (2) into OR″. The first step comprises reacting a formic or orthoformic ester in the presence of a Lewis acid and a base. The second step comprises reacting the compound with R″OH or with R″OH and CH(OR″)3 under acidic conditions or using a phase-transfer catalyst in a two-phase system and regulating the base and the concentration thereof to stereoselectively synthesize the target compound. In another, process, the compound is efficiently produced without isolating the compound. The compound can also be produced without the compound (2).

Abstract: There is provided a method by which various compounds (1) having a carboxyl group in the molecule have the carboxyl group converted to a (dioxolenon-4-yl)methyl ester at low cost, in a simple way and at high yield.

Abstract: Novel thio phenol compounds bearing heterocyclic groups as the substituent, useful as intermediates for the preparation of agricultural chemicals, particularly herbicides; intermediates for the preparation of the same; and processes for the preparation of both as represented by reaction formula (I), herein R1 is C1-C4 alkyl; R2 is hydrogen or C1-C4 alkyl; R3 is hydrogen cyano, amido, C1-C4 alkylcarbonyl or C1-C4 alkoxycarbonyl; R4 is C1-C4 alkyl; and Q is isoxazolyl or the like.

Abstract: The present invention is directed to a benzoic acid derivative methyl 3-formyl-4-methanesulfonyl-2-methylbenzoate. The compound is useful as a starting material for herbicide manufacture.

Abstract: This invention concerns a benzoic acid represented by the formula ?I! ##STR1## or a benzoic acid derivative and a method for the production of a compound represented by the formula ?I!.

Abstract: The present invention is directed to substituted bicycloheptanedion e derivatives represented by a general formula ?I!; ##STR1## wherein R represents C.sub.1 -C.sub.4 alkyl, R.sup.1 represents hydrogen, C.sub.1 -C.sub.10 alkyl, C.sub.2 -C.sub.4 alkenyl, C.sub.2 -C.sub.4 alkynyl, aralkyl, C.sub.2 -C.sub.4 haloalkynyl, C.sub.1 -C.sub.4 alkoxy C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 haloalkyl, C.sub.2 -C.sub.4 haloalkenyl, etc. and R.sup.2 represents optionally substituted phenyl or optionally substituted pyridyl, the salts thereof and herbicides comprising the same as the active ingredient.