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3.2- Sigmatropic rearrangements stereocontrol

The ease of these transformations and the complete stereocontrol was in agreement with the known overall stereospecificity of the selenium(IV) oxide oxidation9,10, and strongly indicated a [2,3] sigmatropic rearrangement of intermediates like 7 leading to selenium(II) esters 8, which finally hydrolyze to the -alcohol 9. [Pg.452]

Scheme 15 One-pot stereocontrolled synthesis of 9-cis-retinoids via [2,3]sigmatropic rearrangement of propargylic sulfenates... Scheme 15 One-pot stereocontrolled synthesis of 9-cis-retinoids via [2,3]sigmatropic rearrangement of propargylic sulfenates...
Anderson, J. C., Roberts, C. A. The tri-n-butyltin group as a novel stereocontrol element and synthetic handle in the aza-[2,3]-Wittig sigmatropic rearrangement. Tetrahedron Lett. 1998, 39,159-162. [Pg.540]

See other pages where 3.2- Sigmatropic rearrangements stereocontrol is mentioned: [Pg.530]    [Pg.824]    [Pg.172]    [Pg.824]    [Pg.448]    [Pg.268]    [Pg.411]    [Pg.725]    [Pg.114]    [Pg.196]    [Pg.107]    [Pg.475]    [Pg.22]    [Pg.43]    [Pg.64]    [Pg.198]    [Pg.86]    [Pg.86]    [Pg.480]    [Pg.27]    [Pg.81]    [Pg.103]    [Pg.109]    [Pg.112]    [Pg.114]    [Pg.215]    [Pg.836]    [Pg.850]    [Pg.268]    [Pg.634]    [Pg.130]    [Pg.390]    [Pg.830]    [Pg.855]    [Pg.130]    [Pg.90]    [Pg.943]    [Pg.943]    [Pg.960]    [Pg.960]    [Pg.189]   
See also in sourсe #XX -- [ Pg.3 ]

See also in sourсe #XX -- [ Pg.943 ]

See also in sourсe #XX -- [ Pg.3 ]



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Sigmatropic -rearrangements rearrangement

Stereocontrol

Stereocontrolled

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