Abstract:
Phenols nuclear substituted by 1 to 3 straight-chain or branched-chain alkyl substituents of 1 to 10 carbons are prepared by oxidizing the aldehyde group of the corresponding alkyl substituted benzaldehyde with an organic peracid, which is derived from a carboxylic acid of pKa in water less than 4. The formate ester of the phenol, which may be in the reaction product, is hydrolysed or transesterified to form the phenol.
Abstract:
O- AND/OR P-ALKYLPHENOLS WITH 1 OR 2 C1-10 alkyl groups are prepared by oxidising the corresponding alkylbenzaldehyde with hydrogen peroxide in the presence of an acid of pKa less than 3 which is an organic acid or organic sulphonic acid.
WHERE R1, R2 and R3 independently represent hydrogen or C1-C5 alkyl is obtained by oxidising with hydrogen peroxide a solution of the corresponding aldehyde in a polymethylene sulphone e.g. sulpholane.
Abstract:
Phenols nuclear substituted by 1 to 3 straight chain or branched chain alkyl substituents of 1 to 10 carbons are prepared by oxidising the aldehyde group of the corresponding alkyl substituted benzaldehyde with an organic peracid, which is derived from a carboxylic acid of pKa in water of at least 4, in the presence of a carboxylic acid of pKa in water less than 4. The formate ester of the phenol, which may be in the reaction product, is hydrolysed or transesterified to form the phenol.