Abstract: The present invention relates to a method for producing N-substituted sulfonamide compounds including a step of reacting a sulfonamide compound of general formula (1) with a halogenated organic compound of general formula (2) in the presence of cesium carbonate or potassium carbonate in an organic solvent to produce an N-substituted sulfonamide compound of general formula (3).

Abstract: The present invention relates to a method for producing N-substituted sulfonamide compounds including a step of reacting a sulfonamide compound of general formula (1) with a halogenated organic compound of general formula (2) in the presence of cesium carbonate or potassium carbonate in an organic solvent to produce an N-substituted sulfonamide compound of general formula (3).

Abstract: The present invention provides: a method for producing a mixed sulfonic acid anhydride of the general formula (1) by reacting a sulfonic acid compound of the general formula (2) with a perfluoroalkyl sulfonic acid anhydride or a perfluoroalkyl sulfonic acid halide; and a method for producing a sulfonamide compound of the general formula (4) obtained by reacting an amine compound of the general formula (3) with a mixed sulfonic acid anhydride of the general formula (1).

Abstract: The present invention relates to a method for producing N-substituted sulfonamide compounds including a step of reacting a sulfonamide compound of general formula (1) with a halogenated organic compound of general formula (2) in the presence of cesium carbonate or potassium carbonate in an organic solvent to produce an N-substituted sulfonamide compound of general formula (3).

Abstract: The present invention provides: a method for producing a mixed sulfonic acid anhydride of the general formula (1) by reacting a sulfonic acid compound of the general formula (2) with a perfluoroalkyl sulfonic acid anhydride or a perfluoroalkyl sulfonic acid halide; and a method for producing a sulfonamide compound of the general formula (4) obtained by reacting an amine compound of the general formula (3) with a mixed sulfonic acid anhydride of the general formula (1).

Abstract: The present invention relates to a method for producing N-substituted sulfonamide compounds including a step of reacting a sulfonamide compound of general formula (1) with a halogenated organic compound of general formula (2) in the presence of cesium carbonate or potassium carbonate in an organic solvent to produce an N-substituted sulfonamide compound of general formula (3).

Abstract: The present invention relates to a process for preparing a 3-substituted thiophene represented by the formula (2): wherein R represents a cyano group, a formyl group, a carboxyl group, a hydrocarbyloxycarbonyl group which may have a substituent(s) or an acyl group which may have a substituent(s), which comprises reacting a vinyl compound represented by the formula (1): RCH?CHY??(1) wherein R has the same meaning as defined above, and Y represents a leaving group, and an ?-mercaptoacetaldehyde or a multimer thereof.

Abstract: The present invention relates to a process for preparing a ?-oxonitrile compound or an alkali metal salt thereof which comprises reacting a carboxylic ester represented by the formula (1): R1CO2R2??(1) wherein R1 and R2 each represent a group which does not participate in a reaction, provided that R2 excludes a hydrogen atom, with a nitrile compound represented by the formula (2): R3CH2CN??(2) wherein R3 represents an alkyl group, and a base at 145 to 300° C. in a sealed vessel to obtain an alkali metal salt of a ?-oxonitrile compound represented by the formula (3): wherein R1 and R3 have the same meanings as defined above, and neutralizing the same with an acid, if necessary.

Abstract: The present invention relates to a process for preparing a &bgr;-oxonitrile compound or an alkali metal salt thereof which comprises reacting a carboxylic ester represented by the formula (1):

Abstract: There is disclosed a process for producing a 2-substituted thiopyrimidine-4-carboxylate represented by the formula (3): wherein R2 represents a substituted or unsubstituted hydrocarbon group and R3 represents a hydrocarbon group, which comprises reacting-an &agr;-keto ester compound represented by the formula (1): R1OCH═CHCOCO2R2  (1) wherein R1 represents a substituted or unsubstituted hydrocarbon group, and R has the same meaning as defined above, with an isothiourea compound represented by the formula (2): wherein R3 has the same meaning as defined above.

Abstract: There is disclosed a process for producing a 2-substituted thiopyrimidine-4-carboxylate represented by the formula (3): 1

Abstract: A (polycyclic secondary-amino)dialkoxysilane favorably employable as a catalyst for polymerization of &agr;-olefin can be prepared by reacting tetrachlorosilane, or a mono(C1-C8)alkyltrichlorosilane with a polycyclic secondary-amine in a non-hydrous, non-alcoholic organic solvent in the presence of a hydrogen chloride-trapping reagent, to produce a (polycyclic secondary-amino)chlorosilane and reacting the (polycyclic secondary-amino)chlorosilane with an alkali metal alkoxide or an alkaline earth metal alkoxide in the presence of a lower alcohol.

Abstract: A (polycyclic secondary-amino)dialkoxysilane favorably employable as a catalyst for polymerization of &agr;-olefin can be prepared by reacting tetrachlorosilane or a mono (C1-C8) alkyltrichlorosilane with a polycyclic secondary-amine in a non-hydrous, non-alcoholic organic solvent in the presence of a hydrogen chloride-trapping reagent, to produce a (polycyclic secondary-amino) chlorosilane and reacting the (polycyclic secondary-amino) chlorosilane with an alkali metal alkoxide or an alkaline earth metal alkoxide in the presence of a lower alcohol.