Method for producing a hydroxy compound by decarboxylation in the presence of a bronsted base
AssigneeCovestro Intellectual Property GmbH & Co. KG
InventorsJens Langanke, Erik Sluyts, Jan Heijl, Niklas Meine
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Abstract
The invention relates to a method for producing a specific hydroxy compound by decarboxylating a specific carboxylic acid compound or a salt of said carboxylic acid compound in the presence of a Bronsted base. The invention also relates to a method for producing a diaryl carbonate or a bisphenol, to a method for producing a polycarbonate and to a use of a Bronsted base during the reaction of the decarboxylation of a specific carboxylic acid compound or a salt of said carboxylic acid compound.
Claims18
A process for producing a hydroxy compound of the formula (I)
- in which
- R is a linear or branched alkyl group having 1 to 6 carbon atoms,
- n is 1 or 2, and
- m is 0, 1, 2, or 3,
- by decarboxylation of a carboxylic acid compound of the formula (II) or of a corresponding salt of said carboxylic acid compound of the formula (II)
- in which R, n, and m are as defined above,
- wherein at least one Brønsted base is present during the decarboxylation reaction.
The process as claimed in claim 16, wherein the at least one heterogeneous catalyst used is a zeolite.
A method comprising increasing the yield of a hydroxy compound of the formula (I)
- in which
- R is a linear or branched alkyl group having 1 to 6 carbon atoms,
- n is 1 or 2, and
- m is 0, 1, 2, or 3,
- in the reaction for the decarboxylation of a carboxylic acid compound of the formula (II) or of a corresponding salt of said carboxylic acid compound of the formula (II)
- in which R, n, and m are as defined above,
- utilizing at least one Brønsted base.
Dependencies are inferred from the claim text.