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Search results for: sharpless epoxidation

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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 ...
URL: http://www.organic-chemistry.org/Highlights/2004/03May.shtm
... 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 ...
URL: http://www.organic-chemistry.org/Highlights/2005/14February.shtm
... .) 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 ...
URL: http://www.organic-chemistry.org/Highlights/2005/16May.shtm
... 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 ...
URL: http://www.organic-chemistry.org/Highlights/2006/31July.shtm
... 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( ...
URL: http://www.organic-chemistry.org/Highlights/2007/05November.shtm
... 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 ...
URL: http://www.organic-chemistry.org/Highlights/2005/28February.shtm
... in Strasbourg prepared the substrate 20 for Sharpless asymmetric epoxidation using the method that we ... (J. Org. Chem. 2003, 68, 6047. ), ...
URL: http://www.organic-chemistry.org/Highlights/2007/22January.shtm
... 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 ...
URL: http://www.organic-chemistry.org/Highlights/2006/17July.shtm
... 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 ...
URL: http://www.organic-chemistry.org/Highlights/2008/07January.shtm
... 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 ...
URL: http://www.organic-chemistry.org/Highlights/2006/30JanuaryB.shtm
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