Catalytic efficiency of tetrabutylammonium salts of sandwich tungstophosphates B‐α‐[M₄(H₂O)₂(PW₉O₃₄)₂]ⁿ⁻, M = Co^II, Mn^II, Fe^III, was studied in the oxidation of (R)-(+)-limonene, geraniol, linalool, linalyl acetate, carveol, and cis-cyclooctene with hydrogen peroxide, in acetonitrile. Oxidation of (R)-(+)-limonene gave limonene-1,2-diol as main product. Epoxidation of linalool takes place preferentially at the more substituted 6,7-double bond, the corresponding 6,7-epoxide reacting further, yielding furano- and pyrano-oxides, via intramolecular cyclization. Oxidation of linalyl acetate occurred preferentially at the more substituted 6,7-double bond for Mn₄(PW₉)₂, affording 6,7-epoxide at 82% selectivity. Linalyl acetate 1,2-epoxide was the major product with 51% and 77% selectivity for Co₄(PW₉)₂ and Fe₄(PW₉)₂, respectively. Oxidation of carveol occurred with very good conversions in the presence of Mn₄(PW₉)₂, Co₄(PW₉)₂ and Fe₄(PW₉)₂, yielding carvone and carveol 1,2-epoxide in similar amounts. Oxidation of cis-cyclooctene gave only the epoxide, while oxidation of geraniol at room temperature afforded 2,3-epoxygeraniol as the major product.

研究了夹心钨磷酸盐B-α-[M ₄（H ₂ O）₂（PW ₉ O ₃₄）₂ ] ^n-（M = Co ^II，Mn ^II，Fe ^III）的四丁基铵盐在（- ）的氧化中的催化效率R）-（+）-柠檬烯，香叶醇，芳樟醇，乙酸芳樟酯，香芹酚和顺式-环辛烯与过氧化氢的乙腈溶液。（R的氧化）-（+）-柠檬烯得到柠檬烯-1,2-二醇作为主要产物。芳樟醇的环氧化反应优先发生在取代度更高的6,7-双键上，相应的6,7-环氧化物进一步反应，通过分子内环化反应生成呋喃-和吡喃氧化物。乙酸芳樟酯的氧化优先发生在Mn ₄（PW ₉）₂的更取代的6,7-双键处，以82％的选择性提供6,7-环氧。乙酸芳基酯1,2-环氧化物是主要产物，对Co ₄（PW ₉）₂和Fe ₄（PW ₉）_2的选择性分别为51％和77％。在锰的存在下，香芹酚的氧化转化率很高₄（PW ₉）₂，Co ₄（PW ₉）₂和Fe ₄（PW ₉）₂产生类似量的香芹酮和香芹酚1,2-环氧化物。顺式-环辛烯的氧化仅产生环氧化物，而香叶醇在室温下的氧化得到2,3-环氧香叶醇为主要产物。