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Nouvelles synthèses de pyrimidines

✍ Scribed by E. Cherbuliez; K. N. Stavritch


Publisher
John Wiley and Sons
Year
1922
Tongue
German
Weight
853 KB
Volume
5
Category
Article
ISSN
0018-019X

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✦ Synopsis


En soumettant la mkthylkne-asparagine (I) a la reaction de Hofmann (traitement a l'hypobromite) dans le but de la transformer en un derive de l'acide diamino-propionique, nous avons obtenu un acide halogene C,H,03N,Br.

La constitution de ce corps pouvait 6tre interpretke de deux manihres. Les produits intermhdiaires, dans la reaction de Hofmann, ont une tendance trbs grande ti la cyclisation (p. ex. transformation de la phtal-diamide en benzoylhne-ur6e)l). Dans notre cas, on pouvait obtenir ainsi un derive de la p-diazine ( 11) Br 11 II + N-CH -I COOH VI. V. IV. I) Hoogewerff, can Dorp, R. 15, 111 (1896). l) R. Behrend, A. 229, 17 (1885): la 2,6-dioxy-4-m6thyl-pyrimidine transformbe 2, 0. 8ikzrk, A. 38 I, 152 (191 1): la 2-oxy-4,6-dim&hyl-pyrimidine transform& en 2,6-dioxy-4-m6thyl-5-bromo-pyrimidine. en 2-oxy-4,6-dim6thyl-5-bromo-pyrimidine. 0,2150 gr. de subst. ont donne 0,3179 gr. CO, et 0,1311 gr.


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