A method for producing a bifunctional compound of formula (1): ##STR00001##
where R.sub.1 represents COOCH.sub.3, COOC.sub.2H.sub.5, COOC.sub.3H.sub.7, COOC.sub.4H.sub.9 or CHO and R.sub.2 represents H, CH.sub.3 or C.sub.2H.sub.5, by subjecting a monoolefin of formula (2): ##STR00002##
where R.sub.1 represents COOCH.sub.3, COOC.sub.2H.sub.5, COOC.sub.3H.sub.7, COOC.sub.4H.sub.9 or CHO and R.sub.2 represents H, CH.sub.3 or C.sub.2H.sub.5, carbon monoxide and hydrogen gases to a hydroformylation reaction in the presence of a rhodium compound and an organic phosphorous compound. Compounds produced.

A method for producing a bifunctional compound of formula (1): ##STR00001##
where R.sub.1 represents COOCH.sub.3, COOC.sub.2H.sub.5, COOC.sub.3H.sub.7, COOC.sub.4H.sub.9 or CHO and R.sub.2 represents H, CH.sub.3 or C.sub.2H.sub.5, by subjecting a monoolefin of formula (2): ##STR00002##
where R.sub.1 represents COOCH.sub.3, COOC.sub.2H.sub.5, COOC.sub.3H.sub.7, COOC.sub.4H.sub.9 or CHO and R.sub.2 represents H, CH.sub.3 or C.sub.2H.sub.5, carbon monoxide and hydrogen gases to a hydroformylation reaction in the presence of a rhodium compound and an organic phosphorous compound. Compounds produced.

A method for producing a bifunctional compound of formula (1): ##STR00001##
where R.sub.1 represents COOCH.sub.3, COOC.sub.2H.sub.5, COOC.sub.3H.sub.7, COOC.sub.4H.sub.9 or CHO and R.sub.2 represents H, CH.sub.3 or C.sub.2H.sub.5, by subjecting a monoolefin of formula (2): ##STR00002##
where R.sub.1 represents COOCH.sub.3, COOC.sub.2H.sub.5, COOC.sub.3H.sub.7, COOC.sub.4H.sub.9 or CHO and R.sub.2 represents H, CH.sub.3 or C.sub.2H.sub.5, carbon monoxide and hydrogen gases to a hydroformylation reaction in the presence of a rhodium compound and an organic phosphorous compound. Compounds produced.

A method for producing a polyhydric alcohol includes: subjecting a crude reaction solution obtained by performing a reduction reaction in the presence of a hydrogenation catalyst and hydrogen using a polyhydric aldehyde having an alicyclic structure as a starting material to distillation purification. The distillation purification is performed after a content of a metal element in the crude reaction solution is 30 ppm by mass or less, and preferably 10 mass ppm or less.

A method for producing a polyhydric alcohol includes: subjecting a crude reaction solution obtained by performing a reduction reaction in the presence of a hydrogenation catalyst and hydrogen using a polyhydric aldehyde having an alicyclic structure as a starting material to distillation purification. The distillation purification is performed after a content of a metal element in the crude reaction solution is 30 ppm by mass or less, and preferably 10 mass ppm or less.

Provided are a tricyclodecane dimethanol composition, in which a ratio of isomers is controlled, and a preparation method thereof.

Provided are a tricyclodecane dimethanol composition, in which a ratio of isomers is controlled, and a preparation method thereof.

An aryl-substituted alkanal compound having a molecular weight of less than 300 g/mol and which bears a substituent on the aryl ring ortho to a substituent bearing the aldehyde functionality. Said compounds are useful as perfume ingredients in personal care and household care products.

An aryl-substituted alkanal compound having a molecular weight of less than 300 g/mol and which bears a substituent on the aryl ring ortho to a substituent bearing the aldehyde functionality. Said compounds are useful as perfume ingredients in personal care and household care products.

An aryl-substituted alkanal compound having a molecular weight of less than 300 g/mol and which bears a substituent on the aryl ring ortho to a substituent bearing the aldehyde functionality. Said compounds are useful as perfume ingredients in personal care and household care products.