https://beilstein-journals.org/bjoc/articles/6/61
BJOC - Synthesis of spiroannulated and 3-arylated 1,2,4-trioxanes from mesitylol and methyl...
Synthesis of spiroannulated and 3-arylated 1,2,4-trioxanes from mesitylol and methyl 4-hydroxytiglate by photooxygenation and peroxyacetalization