Abstract
We developed a new and short synthetic route to 2,7-di-tert-butyl-trans-15,16-dimethyldihydropyrene (DHP) via tetrahydroxy[2.2]metacyclophane in four reaction steps with a total yield of 37%. 2,7-Di-tert-butyl-trans-15,16-dimethyldihydropyrene functionalized by acetoxy groups at 4-, 5-, 9-, 10-positions was synthesized via 5,13-di-tert-butyl-8,16-dimethyl-1,2,9,10-tetrahydroxy[2.2]MCP in five reaction steps with a yield of 24%, and its DHP structure was determined by ¹H NMR spectroscopy and X-ray crystal-structure analysis.
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