A new practical method for ketalization or oxy-Michael/ ketalization was developed using the high-pressure-promoted condensation of ketones or α,β-unsaturated ketones with alcohols in the presence of trialkyl orthoformates as water scavengers.
Mild Microwave‐Assisted Hydrolysis of Acetals Under Solvent‐Free Conditions
作者:Yanhong He、Martin Johansson、Olov Sterner
DOI:10.1081/scc-200036616
日期:2004.12.31
Abstract Acetals are efficiently hydrolyzed with silica gel‐supported pyridinium tosylate moistened with water in solvent‐freeconditionsundermicrowaveirradiation. The method is efficient and mild, with acid‐sensitive 3‐hydroxyacetals and 3‐methoxyacetals being hydrolyzed in minutes in good yields.