Process for the production of a dioxolane compound from crude glycerol including a liquid-liquid extraction step

摘要

A process for the production of dioxolane compounds of formula (I), wherein R1 and R2 independently represent hydrogen or an alkyl chain from 1 to 10 carbon atoms; R3 and R4 independently represent hydrogen, an alkyl chain from 1 to 5 carbon atoms or an alkyl chain from 1 to 5 carbon atoms endowed with one or more hydroxyl groups. Such process comprises successively a reaction step between crude glycerol and aldehyde or ketone and a liquid-liquid extraction step with an extracting ketonic solvent corresponding to formula (II) with A and B independently being an alkyl chain with 2 to 10 carbon atoms, or phenyl, A and B not comprising hydroxyl functions.;

主权项

1. A process for the production of a dioxolane compound of formula (I): wherein: R1 and R2 independently represent hydrogen or an alkyl chain from 1 to 10 carbon atoms, and R3 and R4 independently represent hydrogen, an alkyl chain from 1 to 5 carbon atoms or an alkyl chain from 1 to 5 carbon atoms endowed with one or more hydroxyl groups;said process comprising successively carrying out:
a reaction step between crude glycerol and an aldehyde or a ketone, wherein when said reaction is between said aldehyde and said crude glycerol, one of said groups R1 and R2 is hydrogen, while when said reaction is between said crude glycerol and said ketone, said groups R1 and R2 do not represent hydrogen; and a liquid-liquid extraction step with an extracting ketonic solvent corresponding to formula II:
A-CO-B with A and B independently being an alkyl chain with 2 to 10 carbon atoms, or phenyl, and with A and B not comprising hydroxyl functions.