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Reaction of Meldrum's acid with d-mannose and l-arabinose
✍ Scribed by Francisca Zamora Mata; Manuel Buenoe Martínez; Juan A. Galbis Pérez
- Publisher
- Elsevier Science
- Year
- 1992
- Tongue
- English
- Weight
- 236 KB
- Volume
- 225
- Category
- Article
- ISSN
- 0008-6215
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## Abstract A series of pyrido[2,3‐__d__]pyrimidine‐4,7‐diones 5a‐h were prepared from 6‐amino‐4‐pyrimidones 1 and benzylidene Meldrum's acid derivatives 2 by cyclization reactions in boiling nitrobenzene. The structure of 5, determined by nmr measurements, reveals a selective orientation of 1 and
## Abstract The reaction of Meldrum's acid with silylated anilines substituted by an electron withdrawing group easily yields the corresponding __N__‐phenyl malonamic acid, when the reaction is performed under high vacuum in dichlorobenzene.