Butane 2,3-Butanediol esters

Application To produce 1,4 butanediol (BDO) from butane via maleic anhydride and hydrogen using ester hydrogenation. 

Erylus formosus [45], was also reported by Kulkami et al. [53]. As shown in Fig. (19), a common bifunctional nine-carbon aldehyde was used for both syntheses. Both syntheses started with the DHP monoprotection of 1,4-butanediol, followed by subsequent PCC oxidation to the corresponding aldehyde. Reaction of this butanal with (4-carboxybutyl)triphenylphosphonium bromide resulted in the corresponding THP protected olefinic acid that was further deprotected and esterified to the methyl ester. A second oxidization with PCC afforded the desired intermediate methyl 8-formyloct-5-enoate which secured the cis A5 double bond in the final targets, Fig. (19). The... 

Davy Process Technology, U K Butanediol, 1,4- Maleic anhydride and hydrogen Process produces 1,4 butanediol (BDO) from butane via maleic anhydride and hydrogen using ester hydrogenation 11 NA... 

Long-chain unsaturated o, ct>-dicarboxylic acid methyl esters and their epoxidized derivatives were polymerized with 1,3-propanediol or 1,4-butane-diol in the presence of lipase CA catalyst to produce reactive polyesters [112]. The molecular weight of the polymer from 1,4-butanediol was higher than that from 1,3-propanediol. All the resulting polymers had a melting point ranging from 23 to 75 °C. 

---