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Sugars, industrial chemicals derived from

Although the polyhydric alcohols derived from sugars have been the subject of numerous investigations over many years, the inner ethers or anhydrides of these substances have been for the most part neglected, despite the fact that many of them were isolated and some description of their properties recorded before the advent of the twentieth century. In recent years, however, the anhydrides of polyhydric alcohols derived from sugars have received marked attention in several countries. Some indeed have achieved importance in chemical industry. Most interest has been centered on the anhydrides of pentitols and hexitols and this article will be restricted to a discussion of the chemistry of these substances. [Pg.204]

Various attempts to synthesize biopterin independent of naturally occurring sugars have been carried out (Scheme 11). L-Tartalic acid and (S)-lactic acid were converted to 5-deoxy-L-arabinose (62) and its derivative (67), respectively [76-78]. However, these procedures required multiple steps and cannot be replaced by the procedure using L-rahmnose (65). The stereoselective process of biopterin 7-carboxylic acid (68) starting from E-2-butenoic acid, which is a bulk industrial chemical, looked attractive because the process is thoroughly independent of natural chiral resources, however, it is not applicable to the synthesis of biopterin (30) [79]. [Pg.146]

In the initial stages, the chemical process industries were restricted to inorganic chemicals (sulfuric acid, nitric acid), sugar, paper, fertilizers, etc. Most hydrocarbons were derived from coal. [Pg.2]

Combining the biodegradability of the polymer matrix with the possibility to improve its physical-chemical and thermo-mechanical performances represents a real opportunity. In addition to poly(e-caprolactone), which is derived from the petrochemical industry, this nanocomposite technology has been extended to other aliphatic polyesters such as poly(a-hydroxyacid)s, the most representative being poly(lactic acid) issued fi om sugar and (poly)saccharides fermentation. Poly(lactic acid) clay nanocomposites produced from renewable (non fossil) feedstock should allow for an interesting valorisation of surplus agricultural products. [Pg.328]


See other pages where Sugars, industrial chemicals derived from is mentioned: [Pg.257]    [Pg.84]    [Pg.22]    [Pg.230]    [Pg.4]    [Pg.264]    [Pg.27]    [Pg.210]    [Pg.43]    [Pg.88]    [Pg.226]    [Pg.391]    [Pg.276]    [Pg.252]    [Pg.143]    [Pg.440]    [Pg.43]    [Pg.4]    [Pg.844]    [Pg.1174]    [Pg.392]    [Pg.4]    [Pg.213]    [Pg.56]    [Pg.606]    [Pg.215]    [Pg.2]    [Pg.298]    [Pg.355]    [Pg.431]    [Pg.60]    [Pg.3]    [Pg.365]    [Pg.15]    [Pg.225]    [Pg.52]    [Pg.234]    [Pg.218]    [Pg.279]    [Pg.235]    [Pg.93]    [Pg.1]    [Pg.171]    [Pg.101]    [Pg.191]   
See also in sourсe #XX -- [ Pg.229 ]




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Chemical derivation

Chemical derivatives

Sugars sugar derivatives

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