1-O-alkylglycerol and diglycerol ethers are obtained in high yields and high selectivity by catalyticreductivealkylation of glycerol and diglycerol with linear aldehydes in the presence of 0.5 mol% of Pd/C under 10 bars of hydrogen using a Brønsted acid as co-catalyst. All byproducts were identified. A mechanism for the reductivealkylation is proposed.
1-O-Alkyl glycerol and di-glycerol monoethers are, respectively, obtained in high yields and selectivity by catalytic reductive etherification of mono- and di-glycerol with linear aldehydes in the presence of 0.5 mol % of Pd/C under 10 bars of hydrogen using a Bronsted acid as co-catalyst. (C) 2009 Elsevier Ltd. All rights reserved.
Percutaneous absorption accelerator and preparation containing same