Y. Ushigoe et al., SYNTHESIS OF 1,2,4-TRIOXANES AND 1,2,4-TRIOXEPANES BY N-HALOGENOSUCCINIMIDE-MEDIATED CYCLIZATIONS OF UNSATURATED HYDROPEROXYACETALS, Journal of the Chemical Society. Perkin transactions. I, (1), 1997, pp. 5-10
Ozonolyses of vinyl ethers 1a-c in CH2Cl2 in the presence of allylic a
nd homoallylic alcohols 3a-c give in each case the corresponding unsat
urated hydroperoxy acetals 4a-h, derived from capture of the carbonyl
oxides 2a-c by the unsaturated alcohols, N-Halogenosuccinimide-mediate
d cyclisations of the hydroperoxides give the corresponding 1,2,4-trio
xanes and/or 1,2,4-trioxepanes, depending on the structure of the hydr
operoxides and the identity of the N-halogenosuccinimides.