Cetylpyridinium dodecatungstate on fluorapatite: efficient and reusable solid catalyst for solvent-free epoxidation†,10.1039/B303315E

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Lactoyl-CoA 全氟丁基戊烷白叶藤碱全氟己基辛烷新白叶藤碱壳寡糖特色专题-生物多肽

Cetylpyridinium dodecatungstate on fluorapatite: efficient and reusable solid catalyst for solvent-free epoxidation†

Junko Ichihara,Akihiro Kambara,Katsuma Iteya,Eiko Sugimoto,Takeshi Shinkawa,Aki Takaoka,Shunro Yamaguchi,Yoh Sasaki

Green Chemistry Pub Date : 05/27/2003 00:00:00 , DOI:10.1039/B303315E

Abstract

We have developed a new catalytic solid phase system for epoxidations using urea–hydrogen peroxide complex (urea–H₂O₂) and cetylpyridinium dodecatungstate ((CetylPy)₁₀ [H₂W₁₂O₄₂]) catalyst on fluorapatite. In the solid phase system epoxidations of cyclic alkenes and allylic alcohols proceeded without solvent at room temperature to afford the corresponding epoxides in good yields. The recovered solid catalyst phase was reusable for the reaction.