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Synthesis of fused tricyclic β-lactams by the Pauson-Khand cyclization of enyne-2-azetidinones

✍ Scribed by Benito Alcaide; Concepción Polanco; Miguel A Sierra

Publisher
Elsevier Science
Year
1996
Tongue
French
Weight
284 KB
Volume
37
Category
Article
ISSN
0040-4039

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📜 SIMILAR VOLUMES

ChemInform Abstract: Synthesis of Fused
ChemInform Abstract: Synthesis of Fused Tricyclic β-Lactams by the Pauson-Khand Cyclization of Enyne-2-azetidinones.
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Synthesis of Fused Tricyclic β-Lactams by the Pauson-Khand Cyclization of Enyne-2-azetidinones. -An approach to tricyclic β-lactams is reported, which represents the first example of a Pauson-Khand cyclization of an enyne system tethered to a four membered ring. -(ALCAIDE, B.;

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New Synthesis of Fused Tricyclic 2-Azetidinones Using Stereoselective Allylation of cis-4-Formyl-β-lactams and Intramolecular Diels-Alder Reaction. -SnCl 4 -promoted addition of (II) to azetidinones (I) gives 1-hydroxy-homoallyl-β-lactams (III) with excellent stereoselectivities. The mesylates of