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Search results for: epoxidation
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... Chem. Int. Ed. 2006, 45, 1429.) his enantioselective epoxidation protocol to arylidene cyclobutanes such as 1. The epoxide 2, formed in ...
... Winssinger of the Université Louis Pasteur in Strasbourg prepared the substrate 20 for Sharpless asymmetric epoxidation using the method that we introduced (J. Org. Chem. 2003 ...
... TITANOCENE CATALYST/RING-CLOSING METATHESIS/ASYMMETRIC TRANSFER HYDROGENATION/RACEMIC SECONDARY ALCOHOLS/ENANTIOSELECTIVE EPOXIDATION/ORGANIC-SYNTHESIS/ALLYLIC ALCOHOLS/TRISUBSTITUTED OLEFINS/TERMINAL EPOXIDES/ACYCLIC OLEFINS ...
... The alcohol so produced (not illustrated) was used to direct the diastereoselectivity of epoxidation, then removed, to give 13. Coupling with 14 then led to ...
... been developed for acyclic stereocontrol. Beginning with the allylic alcohol 4, Sharpless asymmetric epoxidation established the absolute configuration of 5. Following the Jung “non-aldol aldol” ...
... , 130, 6070.) a chiral primary amine salt that catalyzed the enantioselective epoxidation of cyclohexenone 1. Larger ring and alkyl-substituted enones are also epoxidized with high ...
... Berlin, 1988. Key Words: ORGANOMETALLICS/SELENIUM/SeO2/OXIDATION/EPOXIDATION/Se Transformations of ß-hydroxyalkyl selenides to aldehydes and ketones: a review. ...
... of Delaware Reactions of Alkenes One of the most powerful of alkene transformations is enantioselective epoxidation. Tsutomu Katsuki of Kyushu University has developed (Angew. Chem. Int ...
... alcohol 9a failed, but cyclization of the free alcohol 9b proceeded smoothly. V-directed epoxidation then set the relative configuration of the stereogenic centers on the ring. Ring-closing ...
... 2008, 10, 4179) that cyclization of 8, prepared by Sharpless asymmetric epoxidation followed by Sharpless asymmetric dihydroxylation, also proceeded with high diastereocontrol. Vincent Aucagne ...
