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Halohydrins protection

Halohydrins may be used as intermediates in protection of olefins as epoxides and there are some instances of the use of halohydrin acetates to protect double bonds. Overton [49] protected an olefin against both oxidative and reductive conditions by use of the halohydrin acetate and Levine and Wall [50] noted that formation of a halohydrin acetate of the A -olefin in (7) caused the Cj i methyl group to be protected in some way against bromination. Bromhydrin acetates can be... [Pg.311]

The formation of cyanohydrins using CyanotrimethylsUane and Isoselenocyanatotrimethylsilane has been effectively catalyzed by ZnCl2 (eq 30),as has Strecker amino acid synthesis via the treatment of imines with Me3SiCN/ZnCl2. The combination of carbonyl compounds with Acetyl Chloride or Acetyl Bromide may be promoted by ZnCb to afford protected vicinal halohydrins (eq... [Pg.475]

See other pages where Halohydrins protection is mentioned: [Pg.328]    [Pg.15]    [Pg.292]    [Pg.176]    [Pg.685]    [Pg.758]    [Pg.90]    [Pg.741]    [Pg.48]    [Pg.40]    [Pg.899]    [Pg.395]    [Pg.277]    [Pg.279]    [Pg.107]    [Pg.685]    [Pg.272]    [Pg.338]   
See also in sourсe #XX -- [ Pg.6 , Pg.685 ]

See also in sourсe #XX -- [ Pg.6 , Pg.685 ]



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Halohydrin

Halohydrins

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