A novel one step photocatalytic synthesis of dihydropyrazine from ethylenediamine and propylene glycol

Dihydropyrazine (DHP), the intermediate for pyrazine, is synthesized from ethylenediamine and propylene glycol; it is assumed that the reaction proceeds by photooxidation of propylene glycol and cyclization with ethylenediamine to give dihydromethylpyrazine, which by subsequent oxidative demethylati...

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Bibliographic Details
Published inChemical communications (Cambridge, England) no. 16; pp. 1533 - 1534
Main Authors Rao, KVS, Srinivas, B, Prasad, AR, Subrahmanyam, M
Format Journal Article
LanguageEnglish
Published CAMBRIDGE Royal Soc Chemistry 01.01.2000
Subjects
Chemistry
Chemistry, Multidisciplinary
Physical Sciences
Science & Technology
OXIDATION
SEMICONDUCTOR
METHANE
2-METHYLPYRAZINE
REACTIVITY
ZEOLITES
CATALYSTS
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Summary:Dihydropyrazine (DHP), the intermediate for pyrazine, is synthesized from ethylenediamine and propylene glycol; it is assumed that the reaction proceeds by photooxidation of propylene glycol and cyclization with ethylenediamine to give dihydromethylpyrazine, which by subsequent oxidative demethylation via the corresponding acid, forms dihydropyrazine; molecular oxygen, light and TiO2/zeolite promote the reaction.
ISSN:1359-7345
1364-548X
DOI:10.1039/b003934i