Production of 2-ethyl-3-methyl-1,4 diazine

Details Production of 2-ethyl-3-methyl-1,4 diazine Production of 2-ethyl-3-methyl-1,4 diazine

2005-05-24

2005-05-24

Raymond, Richard L. (Department: 1624)

Organic compounds -- part of the class 532-570 series

Organic compounds

Nitrogen attached directly or indirectly to the purine ring...

Reexamination Certificate

active

06897313

ABSTRACT:
The invention relates to a novel, industrial synthesis of 2-ethyl-3-methyl-1,4-diazine.

REFERENCES:
Helvetica Chimica Acta, 50, (month unavailable) 1967, pp. 1754-1758, “Pyrazines”, I. Synthese de méthyl-2-pyrazines alcoylées en 3, par condensation de l' éthylènediamine avac les dioxo-2,3-alcanes, par I. Flament et M. Stoll.
Nakatani Y. et al.: “Synthèse facile de pyrazines disubstituées en 2 et 3” Agricutural and Biological Chemistry., Bd. 37, Nr. 6, 1973, Seiten 1509-1510, XP001024034 Japan Soc. For Bioscience, Biotechnology and Agrochem. Tokyo., JP ISSN: 0002-1369 in der Anmeldung erwähnt das ganze Dokument.
Chemical Abstracts, vol. 104, No. 19, May 12, 1986 Columbus, Ohio, US; abstract no. 168437, Tsai, Songchuan et al: “Syntheses of pyrazines. I” XP002176855 in der Anmeldung erwähnt Zusammenfassung & Nanjing Daxue Xuebao, Ziran Dexue (1984), (2), 245-9, 2 Plates.
Chemical Abstracts, vol. 52, No. 14, .Jul. 25, 1958 Columbus, Ohio, US; abstract no. 111862a, XP002176857 Zusammenfassung & Takeo Ishigure: “Syntheses of piperazines. VIII” Yakugaku Zasshi Bd. 78, 1958, Seiten 229-231.
Rizzi G. P.: “Some reactions of methylpyrazines with organolithium reagents” Journal of Organic Chemistry., Bd. 33, Nr, Apr. 4, 1988, Seiten 1333-1337, XP002176853 American Chemical Society. Easton., US ISSN: 0022-3263 Seite 1336. Hersteilung der Verbindungen 14 und 15 und Referenz 15.
Chemical Abstracts, vol. 88, No. 15, Apr. 10, 1978 Columbus, Ohio, US; abstract no. 105412, Enomoto, Yoshiyuki et al; Pyrazine derivatives XP002176857 in der Anmeldung erwähnt Zusammenfassung & JP 52 136182 A (Ogawa and Co., Ltd., Japan) Nov. 14, 1977

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