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Androstanes hydroboration

D-homosteroids, 382 Hydrazoic acid, 27, 145 Hydriodic acid, 172 Hydroboration, 165, 166 Hydrogen peroxide, 221 Hydrogen transfer, 239 17 i3-Hydroxy-2-acety l-5a-androstan-3 -one acetate, 342... [Pg.459]

The e o-facial selectivity, observed in the hydroboration of 2-, 3-, and 4-methylene-5o -androstanes (96)-(98) (Scheme 10), has been rationalized in terms of the easier steric access and a hyperconjugative interaction of the alkene with the adjacent axial C-H bonds enhancing the electron density on one face of the alkene (99). ... [Pg.459]

See other pages where Androstanes hydroboration is mentioned: [Pg.296]    [Pg.249]    [Pg.426]    [Pg.194]   
See also in sourсe #XX -- [ Pg.99 , Pg.459 ]



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