Photochemical synthesis of pyrimido[1,2-a]benzimidazole derivatives
โ Scribed by A. N. Frolov
- Book ID
- 106522580
- Publisher
- Springer
- Year
- 2004
- Tongue
- English
- Weight
- 44 KB
- Volume
- 74
- Category
- Article
- ISSN
- 1070-3632
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๐ SIMILAR VOLUMES
Several new pyrimido[ 1,2-albenzimidazole derivatives were synthesized by reacting 2-aminobenzimidazole with u, p-unsaturated nitriles and benzoylacetonitrile derivatives. The structures of the products were established on the basis of elemental analyses, IR and 'H-NMR spectral data. ## Umsetzungen
## Abstract magnified image 4โAcetylโ5โmethylโ1โphenylโ1__H__โpyrazole reacts with dimethylformamide dimethylacetal (DMFโDMA) to afford the corresponding (__E__)1โ(5โmethylโ1โphenylโ1__H__โpyrazolโ4โyl)โ3โ(__N,N__โdimethylamino)โ2โpropenโ1โone. The latter product undergoes regioselective 1,3โdipol