## Abstract The reaction of 1‐aryl‐3‐(dimethylamino)‐1‐propanones 1 with one equivalent of 4,5‐diamino‐1__H__‐pyrimidin‐6‐ones 2, in acidic medium, leads to the formation of 4‐aryl‐2,3,6,7‐tetrahydro‐1__H__‐pyrimido[4,5‐__b__]‐[1,4]diazepin‐6‐ones 3. The structure elucidation of the products is bas
Synthesis of a 2,4-diaminodihydrohomopteridine, 6-acetyl-2,4-diamino-7,8-dihydro-9H-pyrimido[4,5-b][1,4]diazepine, using a furazano[3,4-d]pyrimidine precursor
✍ Scribed by Peter H. Boyle; Enid M. Hughes; Hassan A. Khattab
- Publisher
- Elsevier Science
- Year
- 1991
- Tongue
- French
- Weight
- 669 KB
- Volume
- 47
- Category
- Article
- ISSN
- 0040-4020
No coin nor oath required. For personal study only.
📜 SIMILAR VOLUMES
The asymmetric unit of the title compound, C~22~H~29~N~3~O~5~S, contains two independent molecules, __A__ and __B__, which differ slightly in the orientation of the ethyl and tosyl groups with respect to the attached pyrrolidine ring, as evidenced by the relevant torsion angles. In both molecules, t
## Abstract Reactions of ethyl 3‐aryl‐2‐benzoylpropenoates 1 with guanidine and __N__‐alkyl(or benzyl)guanidines have been investigated. Ethyl 2‐aminodihydro‐5‐pyrimidinecarboxylate derivatives 3, 4 or 5, and 3,7‐diethoxy‐carbonyl‐4,6‐dihydro‐2,4,6,8‐tetraaryl‐1__H__‐pyrimido[1,2‐__a__]pyrimidines