Process for batchwise acetal production

Details Process for batchwise acetal production Process for batchwise acetal production

1988-12-05

1990-02-20

Chan, Nicky

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C07D31904

Patent

active

049028073

ABSTRACT:
Disclosed is a process for batchwise production of a 1,3:2,4-dibenzylidene-sorbitol or xylitor compound comprising subjecting a sorbitol or xylitol and a benzaldehyde compound to a condensation reaction in a reactor by feeding a homogeneous solution or suspension formed from (a) sorbitol or xylitor, (b) an aldehyde compound, (c) a lower alcohol, and if necessary (d) an acid catalyst, to the reactor, together with a hydrophobic organic solvent, continuously or intermittently while adjusting the rate of feeding of said homogeneous solution or suspension such that sorbitol or xylitol and the benzaldehyde compound are fed to the reaction system in a total amount per hour of about 0.1 to about 2 parts by weight per part by weight of the 1,3:2,4-dibenzylidene compound as found in the reaction system.

REFERENCES:
patent: 3721682 (1973-03-01), Murai et al.
patent: 4429140 (1984-01-01), Murai et al.

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