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... centers of 2 were then established by Sharpless asymmetric epoxidation. The preparation of the ... 1 began with pulegone 8, available commercially in high enantiomeric purity. Methylation followed ...
... such as 6 are readily available by Sharpless asymmetric epoxidation, this should be a ... route to enantiomerically-aldol products. The rearrangement also works with an aziridine aldehyde such as ...
... .) used the power of the Sharpless oxidations to convert the prochiral 10 into ... by changing the absolute sense of the epoxidation and/or the dihydroxylation, it ...
... Enantioselective Construction of Arrays of Stereogenic Centers Sharpless asymmetric epoxidation has long been a workhorse ... enantioselective synthesis. The SAE protocol, however, gives only mediocre ee ' s ...
... with the absolute configuration being set by Sharpless asymmetric epoxidation. Subsequent to the alkylation ... 11 with the bromide 10, the now-surplus sulfone was removed reductively with Pd( ...
... epoxidation and dihydroxylation, developed by Barry Sharpless have dominated single-enantiomer organic synthesis. Recently ... Carbonyl Compounds The enantioselective oxygenation procedures, epoxidation and dihydroxylation, developed by Barry Sharpless ...
... in Strasbourg prepared the substrate 20 for Sharpless asymmetric epoxidation using the method that we ... (J. Org. Chem. 2003, 68, 6047. ), ...
... alkenyl addition to 10, prepared by Sharpless asymmetric epoxidation. The ee of 12 ... the same as the ee of 10. It might be possible to devise a ...
... Beginning with the allylic alcohol 4, Sharpless asymmetric epoxidation established the absolute configuration of ... . Following the Jung “non-aldol aldol” protocol, exposure of 5 to TMSOTf ...
... The starting material 20 was prepared by Sharpless epoxidation. Acetylide opening was highly regioselective ... to give 21. After protecting group exchange, tungsten-mediated cyclization of 22 gave 23 ...
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