Selective C–H bond hydroxylation of cyclohexanes in water by supramolecular control
作者:Bin Yang、Jian-Fang Cui、Man Kin Wong
DOI:10.1039/c7ra03930a
日期:——
A new approach for selective hydroxylation of non-activated cyclohexanes using dioxirane generated in situ in water through supramolecular control has been developed. Using β-CD and γ-CD as the supramolecular hosts, selective hydroxylation of cyclohexane substrates, including trans/cis-1,4-, 1,3- and 1,2-dimethylcyclohexanes and trans/cis-decahydronaphthalene, was achieved in up to 54% yield in water
已经开发出一种新的方法,该方法使用超分子控制在水中原位生成的二环氧乙烷选择性活化非活化环己烷。使用β-CD和γ-CD作为超分子主体,可实现环己烷底物的选择性羟基化,包括反式/顺式-1,4-,1,3-和1,2-二甲基环己烷以及反式/顺式十氢萘水中的收率达到54%。此外,通过与水中的β-CD和γ-CD进行包合络合,阻止了二环氧乙烷与具有较高空间位阻的C-H键的连接,从而实现了(+)-薄荷醇的位点选择性C-H键羟基化。