Reference

Thermal-solvolytic degradation of cellulose under acidic conditions

Thermal-solvolytic degradation of cellulose under acidic conditions. Garves, Klaus (Inst. Wood Chem. Chem. Technol., Wood Fed. Res. Cent. For. For. Prod., Hamburg 2050/80, Fed. Rep. Ger.). Cellul. Chem. Technol., 18(1), 3-9 (English) 1984. CODEN: CECTAH. ISSN: 0576-9787. DOCUMENT TYPE: Journal CA Section: 43 (Cellulose, Lignin, Paper, and Other Wood Products) Degrdn. of cellulose (I) [9004-34-6] with H2SO4 in solvents was accompanied by dehydration and condensation reaction of carbohydrates to organo-sol. (oil) and insol. products (humic acid). In comparison to H2O as solvent, the alcs. and fatty acids had no great effect on the hydrolytic reaction of I, whereas the addn. of C6H12 [110-82-7] to a hydroxylic solvent resulted in the drastic increase in the I degrdn. In the conversion of carbohydrates to lipophilic compds., oils, AcOH [64-19-7]- or butyric acid [107-92-6]-H2O combinations were the best media for a relatively selective dehydration reaction. In the media of lowest polarity (fatty acid-C6H12), the formation of humic acids was promoted. In comparison to the purely aq. system, addn. of BuOH [71-36-3] or fatty acid was favorable for the formation of 5-(hydroxymethyl)furfural [67-47-0] and levulinic acid [123-76-2] in the solvolytic degrdn. of I.

Direct conversion of constituents of plant material to fine chemical products: synthesis of (hydroxymethyl)furfural

Direct conversion of constituents of plant material to fine chemical products: synthesis of (hydroxymethyl)furfural. Rigal, L.; Paillassa, G.; Gaset, A. (Lab. Chim. Org. Agrochim., Ec. Natl. Super. Chim., Toulouse 31077, Fr.). Top. Furan Chem., Proc. Symp. Furan Chem., 4th, 199-202. Edited by: Kovac, Jaroslav. Slovak Tech. Univ.: Bratislava, Czech. (French) 1983. CODEN: 52DAAQ. DOCUMENT TYPE: Conference CA Section: 45 (Industrial Organic Chemicals, Leather, Fats, and Waxes) Section cross-reference(s): 27 A synthesis method is discussed in which the ion exchanger-catalyzed dehydration of D-fructose [57-48-7] at 80° gives 5-(hydroxymethyl)furfural [67-47-0] which is extd. with iso-BuCOMe to minimize degrdn. of the product.