Spectral behaviour and acidity constants of some arylidenes—2-amino-1,3-pyrimidine
✍ Scribed by M.T. El-Haty; A.E. Mohamed; F.A. Adam; A.A. Gabr
- Publisher
- Elsevier Science
- Year
- 1990
- Tongue
- English
- Weight
- 468 KB
- Volume
- 46
- Category
- Article
- ISSN
- 1386-1425
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📜 SIMILAR VOLUMES
Nucleoside analogues g, 9,10 and 11, in which a pyrrolo [2,3-d]pyrimidine ring is linked m a 2-hydmxymethyl-3-hydmxytetrahydroftwan, have been ~ The azide la used as an intermediate in the routm to Iitese COmlmun~ also gave access to the 1,2,3-triazole isonucleosides 12 and 13.
## Abstract The reaction of the 4,4‐dialkylated 2‐cyclohexenones **1** or **2** with a twofold excess of a secondary amine **3** affords the 2‐amino‐1,3‐cyclohexadienes **4** and **5**, respectively. Irradiation (λ ≧ 300 nm) of the morpholino derivative **4a** yields a mixture of the isomeric 3‐mor
## Abstract magnified image The reaction of 3‐amino‐1,2,4‐triazole (**1**) with arylidene‐5‐acetyl barbituric acid (**2b**, **2c**) or dehydroacetic acid (**2a**) by refluxing in butanol leads to the formation of dihydro‐1,2,4‐triazolo[1,5‐__a__]pyrimidines **3a**, **3b**, **3c**. J. Heterocyclic