Methyl 2,2-dimethoxy-8-oxo-1-oxaspiro[4.5]deca-6,9-diene-3-carboxylate
نویسنده
چکیده
In the title mol-ecule, C(13)H(16)O(6), the cyclo-hexa-1,4-diene ring adopts a flat boat conformation (r.m.s. deviation from planarity = 0.060 Å) and the five-membered tetra-hydro-furan ring adopts an envelope conformation with the carboxyl group-substituted C atom as the flap. The dihedral angle at the spiro junction is 89.1 (1)°. In the crystal, mol-ecules are linked through weak C-H⋯O and van der Waals inter-actions.
منابع مشابه
Diastereoselective spiroannulation of phenolic substrates: synthesis of (+/-)-2-tert-butyl-6-methoxy-1-oxaspiro[4,5]deca-6,9-diene-8-one.
The synthesis of a new spiroether is described. The title compound is obtained as a diastereomeric mixture in 45% yield.
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