To provide a method that can efficiently produce 2,5-bis(aminomethyl)tetrahydrofuran. The method for producing 2,5-bis(aminomethyl)tetrahydrofuran, the method including subjecting 2,5-bis(aminomethyl)furan to a reaction with a hydrogen source in a non-aqueous solvent by using a hydrogenation catalyst to obtain 2,5-bis(aminomethyl)tetrahydrofuran.

To provide a method that can efficiently produce 2,5-bis(aminomethyl)tetrahydrofuran. The method for producing 2,5-bis(aminomethyl)tetrahydrofuran, the method including subjecting 2,5-bis(aminomethyl)furan to a reaction with a hydrogen source in a non-aqueous solvent by using a hydrogenation catalyst to obtain 2,5-bis(aminomethyl)tetrahydrofuran.

Provided is a catalyst for reduction reaction with which 1,4-butanediol or tetrahydrofuran can be obtained with higher selectivity than with the related art, using a raw material derived from biomass. The catalyst is used in a reduction reaction of 3,4-dihydroxytetrahydrofuran with hydrogen, wherein the catalyst contains metal catalysts (1) and (2) below; metal catalyst (1): a catalyst containing M1 and M2 below as metal species and supported on a carrier; and metal catalyst (2): a catalyst containing M1 below as a metal species and supported on a carrier; M1: one or more selected from the group consisting of iron and elements belonging to periods 4 to 6 and groups 5 to 7 of the periodic table; and M2: one or more selected from the group consisting of ruthenium, osmium, and elements belonging to periods 4 to 6 and groups 9 to 11 of the periodic table.

A method for producing a cyclic ether represented by formula (2) includes reacting a 2-hydroxy cyclic ether, represented by formula (1), with hydrogen in the presence of a catalyst.

A method for producing a cyclic ether represented by formula (2) includes reacting a 2-hydroxy cyclic ether, represented by formula (1), with hydrogen in the presence of a catalyst.

The present disclosure provides a method for producing tetrahydrofuran (THF). The method includes: feeding 1,4-butanediol into a reactive distillation apparatus; performing the dehydration reaction in the presence of an acidic catalyst; and producing the top stream containing product THF and the bottom stream from the reactive distillation apparatus, wherein a weight ratio of a water content in the bottom stream to a water content in the top stream is 0.05 to 2.4, thereby providing a high conversion rate and more cost-effectiveness, and enhancing the value of the industrial application.

The present disclosure provides a method for producing tetrahydrofuran (THF). The method includes: feeding 1,4-butanediol into a reactive distillation apparatus; performing the dehydration reaction in the presence of an acidic catalyst; and producing the top stream containing product THF and the bottom stream from the reactive distillation apparatus, wherein a weight ratio of a water content in the bottom stream to a water content in the top stream is 0.05 to 2.4, thereby providing a high conversion rate and more cost-effectiveness, and enhancing the value of the industrial application.

Disclosed are compounds of Formulae 1, 1a, 1b and 2,

##STR00001##

wherein R.sup.1, R.sup.1a, R.sup.1b, R.sup.2, R.sup.3 and R.sup.4 are as defined in the disclosure.

Also disclosed are compositions containing the compounds of Formulae 1, 1a and 1b, and methods for controlling a parasitic nematode comprising contacting the parasitic nematode or its environment with a biologically effective amount of a compound or composition of Formulae 1, 1a, 1b and 2.

Disclosed are compounds of Formulae 1, 1a, 1b and 2,

##STR00001##

wherein R.sup.1, R.sup.1a, R.sup.1b, R.sup.2, R.sup.3 and R.sup.4 are as defined in the disclosure.

Also disclosed are compositions containing the compounds of Formulae 1, 1a and 1b, and methods for controlling a parasitic nematode comprising contacting the parasitic nematode or its environment with a biologically effective amount of a compound or composition of Formulae 1, 1a, 1b and 2.

The disclosure provides a system for production of reactive intermediates from lignocellulosic biomass. The reactive intermediates can be used as platform chemicals for biological conversions or can be further catalytically upgraded to be used as drop in reagents for fuels. The disclosure provides methods and compositions useful for processing biomass to biofuels and intermediates.