## Abstract We report the condensation of substituted 2‐aminopyridines 5 with β‐ketocarboxylic esters in polyphosphoric acid. In this reaction were obtained together with the target compounds, 4__H__‐pyrido[1,2‐__a__]pyrirnidin‐4‐ones 6 also the pyridin‐2‐ones 7. All the compounds 7 were tested for
4β-chloroethylaminopyrimidines and the formation of imidazolidino[1.2-c]pyrimidines on acid treatment of 4-bisβ-hydroxyethylamino-pyrimidines
✍ Scribed by K.L. Nagpal; M.M. Dhar
- Publisher
- Elsevier Science
- Year
- 1967
- Tongue
- French
- Weight
- 510 KB
- Volume
- 23
- Category
- Article
- ISSN
- 0040-4020
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## Abstract 2‐Chloro‐4‐phenyl‐2a‐(4′‐methoxyphenyl)‐3,5‐dihydroazatetracyclic [1,2‐__d__]benzo [ 1,4]diazepin‐1 ‐one (**III**~a~) and 2‐chloro‐4‐methyl‐2a‐(4′‐methoxyphenyl)‐3,5‐dihydroazatetracyclic[1,2‐__d__]‐benzo[1,4]diazepin‐1‐one (**III**~b~) were synthesized. 1‐Benzoyl‐2‐phenyl‐4‐(4′‐methoxy