4A molecular sieves have shown to be efficient catalysts for regio-and stereoselective epoxidation of allylic alcohols.
Selective epoxidation of allylic alcohols with dibutyltin oxyperoxide
โ Scribed by Shigekazu Kanemoto; Tsuyoshi Nonaka; Koichiro Oshima; Kiltiro Utimoto; Hitosi Nozaki
- Book ID
- 104218883
- Publisher
- Elsevier Science
- Year
- 1986
- Tongue
- French
- Weight
- 215 KB
- Volume
- 27
- Category
- Article
- ISSN
- 0040-4039
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โฆ Synopsis
Dibutyltin oxyperoxide derived from Bu2SnO and tBuOOH epoxidize allylic alcohols with high stereo-and regioselectivities.
Epoxides are very useful as intermediates in organic synthesis.' Thus,
๐ SIMILAR VOLUMES
Two series of chiral allylic alcohols, derived from c~,~-unsaturated cyanohydrins, were subjected to asymmetric epoxidation under a variety of conditions. Both achiral (organic peracid, metal-catalyzed peroxide) and chiral (Sharpless titanium-tartrate system) oxidants were applied. Several threo and
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AbstractรAllylic alcohols undergo an efยฎcient process of diastereoselective epoxidation by t-butyl hydroperoxide (TBHP) in n-hexane solution in the presence of catalytic amounts of mono-and bis-cyclopentadienyl titanium(IV) and zirconium(IV) chlorides.