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Uranediol rearrangement

The stereospecificity of the uranediol rearrangement is further exemplified by predominant formation of different products in the formolysis of the epimeric 20a-tosylate (359-OTs) (443, 444). That olefin (360) is formed by 1,2-hydrogen and methyl rearrangements (rather than elimination and secondary acid-catalyzed rearrangement) was demonstrated by introduction of deuterium and tritium label at C20. A substantial... [Pg.190]

Pinacolic rearrangement of a pregnane-17 a,20j5-diol (21), reported by Klyne [228] in explanation of the origin of Marker s "uranediol , gives the lya-methyl-D-homo-iya-ketone (22) The migration of C(i6> is again determined by the... [Pg.157]

See other pages where Uranediol rearrangement is mentioned: [Pg.294]    [Pg.189]    [Pg.227]    [Pg.294]    [Pg.189]    [Pg.227]    [Pg.235]    [Pg.378]    [Pg.285]   
See also in sourсe #XX -- [ Pg.189 , Pg.190 ]



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