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Search results for: robinson annulation
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... . The optimized catalyst for the enantioselective Robinson annulation was the amide 5. With ... mol % of the catalyst, the reaction proceeded in 97% ee. With ...
... , 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 ...
... 11. Following the literature procdure, Robinson annulation of the prochiral 5 with the ... 6 delivered 7 in 93% ee, brought to 99% ee by crystallization ...
... . DOI: 10.1002/ejoc.201000502) Robinson annulation of 17 with 21. Ying-Chun ... of Sichuan University, again using the Hayashi catalyst, reported (Angew. Chem ...
... similarly simple catalyst system, that effected Robinson annulation of 18 to 20. Binding ... organocatalyst to a polymer simplifies recovery and reuse. Tore Hansen of the University of ...
... a simple amine that efficiently catalyzed the Robinson annulation of 26 with 27 to give ... . We (J . Org. Chem. 2013, 78, 8437. ...
... cis 6/5 ring fusion. Robinson annulation converted 2 into 11, that ... methylated to give 12. Reduction of 12 and selective epoxidation led to 13. ...
... material was made using a neat organocatalytic Robinson annulation , which they state was efficient ... on a ten-gram scale. Good stuff. The rest of the synthesis used more ...
... and set them up for a nice Robinson Annulation with the cycloheptanone. Given that ... are a couple of modes of reaction for this compound, a yield in the ...
... Hayashi catalyst functioned well for the enantioselective Robinson annulation of 23 with 22. D ... F. Taber, Org. Chem. Highlights 2011, October 10. URL ...
