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Search results for: robinson annulation
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... from commercial dihydrocarvone 5. Robinson annulation with ethyl vinyl ... 6 (Tetrahedron 2000, 56, 3409. ) ... , that centered on a transannular intramolecular Diels-Alder cycloaddition . ...
... preparation of 2 began with the enantioselective Robinson annulation of the ?-keto ester 4 with ... (5 ), mediated by the organocatalyst 6. In this protocol, originally ...
... combined 27 with 28 to give the Robinson annulation product 29. Dawei Ma of ... Shanghai Institute of Organic Chemistry reported (Org. Lett. 2008, 10, ...
... . To maximize yield, the subsequent Robinson annulation was carried out over three steps ... formation of the silyl enol ether, condensation of the enol ether with methyl vinyl ...
... Organic Chemistry Portal The Robinson Annelation and Related Reactions. R. E. ... Key Words: C-C BOND FORMATION/ANNULATIONS/6-RING/ROBINSON ANNELATION The Beckmann ...
... . ) the Jørgensen variation of the Robinson annulation to the amine-substituted ?-keto ester 1 ... The product cis-fused sulfonamide 3, readily brought to high ee by recrystallization, was ...
... one of the crowning achievements of the Robinson annulation /reductive alkylation approach to stereocontrolled ... construction developed by Gilbert Stork (J . Am. Chem. Soc. 1971 ...
... , available in enantiomerically-pure form by organocatalyzed Robinson annulation . Condensation with thiophenol and formaldehyde ... 6, which under dissolving metal conditions was reduced to an enolate that was trapped ...
... the enone 5, prepared by asymmetric Robinson annulation , that had already been carried ... to the trans-fused ketone 6. Following their earlier work (J . Org. ...
... . The optimized catalyst for the enantioselective Robinson annulation was the amide 5. With ... mol % of the catalyst, the reaction proceeded in 97% ee. With ...
