Polymerization of Isoprene by Aromatic-Lithium Compounds

Polymerization of Isoprene by Using Benzyl Diethyldithiocarbamate as an Iniferter

The polymerization of isoprene through the use of benzyl N,N-diethyldithiocarbamate (BDC) as an iniferter was investigated. The monomer concentration used was kept constant at 2.8 mol/L while the BDC concentration was varied. The polymer product was characterized by Fourier Transform Infrared Spectroscopy (FTIR), Proton Magnetic Resonance (H-NMR), and Differential Scanning Calorimetry (DSC) and...

Highly trans-stereospecific Isoprene Polymerization by Neodymium Borohydrido Catalysts

Synthesis of Aromatic Compounds by Neurospora.

Increasing insight into the biosynthesis of aromatic substances has been obtained during the past few years primarily through the study of mutant strains of microorganisms,1 and by the use of isotopic carbon.2 Shikimic acid, reported to be involved in the biosynthesis of the aromatic amino acids and of p-aminobenzoic acid by Neurospora3 and Escherichia coli, has been shown to be derived in E. c...

Biodegradation of aromatic compounds by Escherichia coli.

Although Escherichia coli has long been recognized as the best-understood living organism, little was known about its abilities to use aromatic compounds as sole carbon and energy sources. This review gives an extensive overview of the current knowledge of the catabolism of aromatic compounds by E. coli. After giving a general overview of the aromatic compounds that E. coli strains encounter an...

Metabolism of aromatic compounds by Caulobacter crescentus.

Cultures of Caulobacter crescentus were found to grow on a variety of aromatic compounds. Degradation of benzoate, p-hydroxybenzoate, and phenol was found to occur via beta-ketoadipate. The induction of degradative enzymes such as benzoate 1,2-dioxygenase, the ring cleavage enzyme catechol 1,2-dioxygenase, and cis, cis-muconate lactonizing enzyme appeared similar to the control mechanism presen...