Process for the preparation of carboxylic acids by aldehyde oxidation in presence of periodate, dichromate and acid in waterOxidation of aldehydes to the corresponding acids comprises reaction with at least an equimolar amount of periodate in the presence of a catalytic amount of bichromate or ...
Preparation of unsaturated aldehydes and unsaturated carboxylic acids for synthesis catalyst PURPOSE: To obtain a producing method of high activity and high mechanical strength carried catalyst for synthesizing a corresponding unsaturated aldehyde and unsaturated carboxylic acid from propylene, isobutylene, tert...
Hatch III 被引量: 5 摘要: agr;-cyano esters are prepared by reacting an acyl halide with an aldehyde in a homogeneous mixture of substantially water-miscible aprotic solvent and an aqueous solution of water-soluble cyanide salt.收藏 引用 批量引用 报错 分享 ...
D. A new and convenient synthesis of N-substituted perhydroazepines from adipaldehyde and primary amines with tetracarbonylhydridoferrate, HFe(CO)4 −, as a selective reducing agent. J. Heterocycl. Chem. 25, 1383–1385 (1988). Article CAS Google Scholar Wilson, K. B. et al. ...
发明人: JS Baum 被引量: 15 摘要: Certain alpha-cyano esters are prepared by reacting an acyl halide with an aldehyde in a substantially water-immiscible aprotic solvent and an aqueous solution of water-soluble cyanide salt in the presence of an amphoteric surfactant rate-promoting agent.收藏...
When a carboxylic acid is used as a raw material to produce an aldehyde by hydrogenation in the gas phase, the conversion of the carboxylic acid and / or t... 福田 瞳,中谷 哲 被引量: 0发表: 2019年 HYDROGENATION CATALYST, AND CATALYTIC HYDROGENATION METHOD FOR ESTER-CONTAINING ALDEHYDE MIXT...
There are various methods for the preparation of high-value organic compounds, one of the best of which is catalytic oxidation of alcohols to their analogous carbonyls. Among the most important compounds that can be prepared using the catalytic process, can be mentioned aldehyde and ketone derivativ...
(–COOH) or carbonyl groups in ketone, aldehyde, lactone, and carboxyl groups are found at 1730.28 cm−1. The vibrations corresponding to ν–C=C– of aromatic rings are found at 1593.21 cm−1. The vibrations ν–C=C corresponding to other carbon–carbon unsaturated bonds are found at ...
aryl or cycloaliphatic groups, R7 is an alkyl, aralkyl, aryl or cycloaliphatic group, n is an integer from 1 to 8 and m is zero or an integer from 1 to 8, and their preparation by formation of the corresponding carboxylic acids by reaction of an aldehyde- or keto-acid with two mols...
respectively. Of note, aliphatic aldehydes reacted slower and 12 h reaction time was required to complete the disulfuration. As expected, primary long-chain aliphatic aldehydes worked equally well (6fand6g, 69–91% yields). The α-branched aliphatic aldehyde5hwas converted to the disulfide6h...