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Pyrano [2,3-d]- and Pyrido [2,3-d] pyrimidines

✍ Scribed by Scarborough, Homer C.


Book ID
120470371
Publisher
American Chemical Society
Year
1964
Tongue
English
Weight
389 KB
Volume
29
Category
Article
ISSN
0022-3263

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πŸ“œ SIMILAR VOLUMES


Ring closure reactions of pyrido[2,3-d]p
✍ Dang Van Tinh; Wolfgang Stadlbauer πŸ“‚ Article πŸ“… 2008 πŸ› Journal of Heterocyclic Chemistry 🌐 English βš– 419 KB

## Abstract magnified image The cyclocondensation of 5‐hydroxy‐pyrido[2,3‐__d__]pyrimidines **1** with malonates gives pyrano[2β€²,3β€²:4,5]‐pyrido[2,3‐__d__]pyrimidines **2**. Nitration of **1** and reduction with zinc in the presence of carboxylic acids/anhydrides gave 2‐alkyloxazolo[5β€²,4β€²:4,5]pyrid