Bis-(chloromethyl) oxetane (BCMO) was synthesised from pentaerythritol by chlorination, followed by ring closure. It was polymerised using BF 3 -etherate and butanediol system, similarly the BCMO–THF (tetrahydrofuran) copolymer was also synthesised. The monomers and the polymers were characterised by IR, H-NMR and molecular weight. Flame retardant properties of the poly-BCMO were also investiga...

Mesogenic chiral esters of optically active (S)-l,2-propanediol and (R,R)-2,3-butanediol were synthesized. The compounds, added to a nematic phase induce cholesteric phases exhibiting a helix inversion with temperature variation. This effect is independent of the molecular structure of the nematic solvent. The inversion temperature varies only slightly with concentration but can be influenced b...

Enterobacter sp. 638 is an endophytic plant growth promoting gamma-proteobacterium that was isolated from the stem of poplar (Populus trichocarpaxdeltoides cv. H11-11), a potentially important biofuel feed stock plant. The Enterobacter sp. 638 genome sequence reveals the presence of a 4,518,712 bp chromosome and a 157,749 bp plasmid (pENT638-1). Genome annotation and comparative genomics allowe...

Wild-type Bacillus subtilis ferments 20 g/liter glucose in 48 h, producing lactate and butanediol, but not ethanol or acetate. To construct an ethanologenic B. subtilis strain, homologous recombination was used to disrupt the native lactate dehydrogenase (LDH) gene (ldh) by chromosomal insertion of the Zymomonas mobilis pyruvate decarboxylase gene (pdc) and alcohol dehydrogenase II gene (adhB) ...

A large-scale synthesis of meso-2,3-difluoro-1,4-butanediol in 5 steps from (Z)-but-2-enediol is described. Crystallographic analysis of the diol and the corresponding benzyl ether reveals an anti conformation of the vicinal difluoride moiety. Monosilylation of the diol is high-yielding but all attempts to achieve chain extension through addition of alkyl Grignard and acetylide nucleophiles fai...

Bacillus sp. BSC154 was isolated from a biological soil crust near Moab, Utah. The strain appears to be capable of chemotaxis and biofilm production. The BSC154 genome contains iron siderophore production, nitrate reduction, mixed acid-butanediol fermentation, and assimilatory and dissimilatory sulfate metabolism pathways.

A simple and efficient asymmetric synthesis of (S,S)-Ethambutol has been carried out using a chiral butanediol. The synthesis was completed within six steps with an overall yield 53% and the enantiomeric purity of final product was 98%. All the reactions were very clean and the yields are excellent.

Paenibacillus sp. strain ICGEB2008 (MTCC 5639) is a Gram-positive cellulolytic bacterium, isolated from the gut of Helicoverpa armigera. Here, we report the draft genome sequence of Paenibacillus sp. ICGEB2008. The annotation of the ~5.7-Mb sequence indicated a cluster of genes related to the glycosyl hydrolase family and the butanediol biosynthesis pathway.

Two thermophilic Bacillus coagulans strains, H-1 and XZL9, both of which were isolated from soils, have different morphological properties. Strain XZL9 but not H-1 is an efficient pentose-utilizing producer of important platform compounds, such as l-lactic acid and 2,3-butanediol. Here we announce the 2.86- and 3.43-Mb sequences of their genomes.

Here we report the full genome sequence of Raoultella ornithinolytica strain B6, a Gram-negative aerobic bacillus belonging to the family Enterobacteriaceae. This 2,3-butanediol-producing bacterium was isolated from oil-contaminated soil on Backwoon Mountain in South Korea. Strain B6 contains 5,398,151 bp with 4,909 protein-coding genes, 104 structural RNAs, and 55.88% G+C content.