Diastereoselective Cyclization of N-Alkenylideneamines into 3,4-Dihydro-2H-pyrrol-1-ium Halides.
β Scribed by Daniela Schley; Juergen Liebscher
- Publisher
- John Wiley and Sons
- Year
- 2007
- Weight
- 50 KB
- Volume
- 38
- Category
- Article
- ISSN
- 0931-7597
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## Abstract For Abstract see ChemInform Abstract in Full Text.
## Abstract It has been found that Nβ(4βimidazolyl)phosphinimidic isocyanates obtained by the reaction of the corresponding chlorophosphine Nβhetarylimide with alkali metal cyanates can undergo intramolecular heterocyclization to yield previously unknown phosphapurine derivatives containing an endo
Stereocontrolled Synthesis of 5-Acyl-3,4-dihydro-2H-pyrroles and Related Heterocycles via Intramolecular 2-Propylidene-1,3-bis(silane)-Acylnitrilium Ion Cyclizations. -The title reaction is found to proceed with good to excellent diastereoselectivity. Reduction of prepared Ξ΄1-pyrrolines results in s