## Abstract For Abstract see ChemInform Abstract in Full Text.
✦ LIBER ✦
Direct synthesis of 3,4-dihydro-2H-pyrido[1,2-a]pyrimidines, by addition reactions with 2-aminopyridines
✍ Scribed by John M Mellor; Glynn D Merriman; Helen Rataj; Gillian Reid
- Publisher
- Elsevier Science
- Year
- 1996
- Tongue
- French
- Weight
- 213 KB
- Volume
- 37
- Category
- Article
- ISSN
- 0040-4039
No coin nor oath required. For personal study only.
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## Abstract The quasi‐one pot synthesis of new 2‐aminopyrido[1,2‐__a__][1,3,5]triazin‐4‐ones starting from 2‐amino‐pyridine and 2‐aminopicolines is herein described in order to obtain a library of cyclic guanidines.
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## 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