ChemInform Abstract: A New Route to Pyrimido[1,6-a]benzimidazole Derivatives.
โ Scribed by M. Bakavoli; M. Nikpour; A. R. Ebrahimi; A. Taghizadeh; M. Rahimizadeh; A. Davoodnia
- Publisher
- John Wiley and Sons
- Year
- 2009
- Weight
- 28 KB
- Volume
- 40
- Category
- Article
- ISSN
- 0931-7597
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๐ SIMILAR VOLUMES
A Cyclopropenone Route to New Pyrrolizidine Derivatives. -Enaminone (I) is converted to pyrrol-2-one (III) with the substituted cyclopropenone (II). Via a subsequent acidic intramolecular aldol reaction bicyclic dihydropyrrolones (IV) and (V) are easily obtained when HCl is employed. With TFA selec
The transformation of bromides (I) (prepared via a previously reported reaction of aldehydes/ketones with difluorovinyllithium) to (III) and ( VI) represents a general and highly regioselective methodology for the introduction of a difluorovinylic group. The silylated products (VI) are useful precur