| 摘要 |
Ethylene or propylene glycol ethers (the latter generally together with the corresponding alkoxy acetone) can be obtained in good yield and selectivity by reacting hydrogen. carbon monoxide and an aldehyde or acetal of the formula RCHO or RCH (OR min )2 wherein R is hydrogen or methyl and R min is C1-10 alkyl, in the presence of a cobalt-containing catalyst and an alcohol of the formula R min OH at a pressure of at least 35 bars and a temperature of 50 to 350 DEG C. The reaction is conducted in the presence of a tin-containing compound or a germanium-containing compound as catalyst promoter. Formaldehyde or an acetal thereof or a formaldehyde-releasing compound is generally reacted at a temperature of from 50 to 300 DEG C and a pressure from 70 to 350 bars to give a product containing ethylene glycol ethers, while acetaldehyde or an acetal thereof is reacted at a temperature of 50 to 350 DEG C and a pressure of 70 to 700 bars to give a product containing propylene glycol ether of the formulae <CHEM> and an alkoxyacetone of the formula CH3-CO-CH2-OR min r |
