Results 181 to 190 of about 6,869 (206)
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Microbial metabolism of pyrazines

Critical Reviews in Microbiology, 2011
Pyrazines are a group of 1,4 dinitrogen substituted benzenes. They have near ubiquitous biological distribution and majority are anthropogenic. The demand for pyrazines in the recent years has increased owing to their vast applications in the field of food, agriculture and medicine.
K S, Rajini   +3 more
openaire   +2 more sources

Synthesis of tetrasubstituted pyrazines and pyrazine N-oxides

Tetrahedron Letters, 2010
Abstract An efficient synthesis of tetrasubstituted unsymmetrical pyrazines and their related pyrazine N-oxides has been developed from commercially available 2-chloro-3-methylpyrazine. The procedure and scope of these synthesis routes are described.
Jae Uk Jeong   +3 more
openaire   +1 more source

ChemInform Abstract: Pyrazine. Syntheses of Naturally Occurring Pyrazines

ChemInform, 1997
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
A. OHTA, Y. AOYAGI
openaire   +1 more source

Pyrazine chemistry. Part 9. Oxygenation of pyrazines and pyrimidines

Journal of the Chemical Society, Perkin Transactions 1, 1979
Singlet oxygen adds to certain substituted pyrazines and pyrimidines to form the endo-peroxides in high yield. The peroxides derived from the pyrazines are often stable compounds. 2,5-Diethoxy-3,6-dimethyl-3,6-epidioxy-3,6-dihydropyrazine can be reduced to the corresponding diol with sodium borohydride, whilst the parent pyrazine is regenerated by ...
Janet L. Markham, Peter G. Sammes
openaire   +1 more source

Vapour and crystal spectra in polarized light of pyrazine-d0, cis pyrazine-d2 and pyrazine-d4

Spectrochimica Acta, 1964
Abstract The infrared spectra of pyrazine-d0, cis pyrazine-d2 and pyrazine-d4 have been measured between 4000 and 400 cm−1. The spectra have been obtained in the vapour and solid states. The dichroic behaviour of the bands has been measured on polycrystalline fully oriented samples.
S. Califano, G. Adembri, G. Sbrana
openaire   +1 more source

Pyrazines

2021
Jie Jack Li, Minmin Yang
openaire   +1 more source

The Pyrazines.

Chemical Reviews, 1947
I J, KREMS, P E, SPOERRI
openaire   +2 more sources

Pyrazine update

Food Reviews International, 1992
openaire   +1 more source

C4H4N2 Pyrazine

2005
G. Graner   +6 more
openaire   +1 more source

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