ChemInform Abstract: A New Stereoselective Synthesis of 2-Amino-4,5-dihydrothiophene-3-carbonitrile Derivatives
β Scribed by V. V. Dotsenko; S. G. Krivokolysko; A. N. Chernega; V. P. Litvinov
- Publisher
- John Wiley and Sons
- Year
- 2008
- Weight
- 23 KB
- Volume
- 39
- Category
- Article
- ISSN
- 0931-7597
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Synthesis of Substituted 2-Amino-5-nitro-4H-pyran-3-carbonitriles. -The reaction of Ξ±-nitroketone (I) with benzylidenemalononitriles (II) catalyzed by Et 3 N represents the first example of a synthesis of nitropyrans (III) from Ξ±-nitroketones.
New Simple Synthesis of 1-Amino(imino)-3-methylpyrido[1,2a]benzimidazole-4-carbonitriles. -Reaction of 2cyanomethylbenzimidazoles (I) and (IV) with Ξ²-aminocrotonic acid nitrile (II) affords the fluorescent title pyrido[1,2-a]benzimidazoles (III) and (V), resp., in moderate yields. -(VOLOVENKO, YU.