7,7-Dimethyl-4a-(3-methyl-2-buten­yl)-2-oxo-4a,5,6,7-tetra­hydro-2H-chromen-4-yl benzoate

An intra­molecular Claisen-like cyclization of ethyl 2-acet­oxy-4,4-dimethyl-1-(3-methyl­but-2-en­yl)cyclo­hex-2-enecarboxylate followed by dialkyl­ation yielded the bicyclic title compound, C(23)H(26)O(4). In both of the fused six-membered rings exist fragments of four atoms which are planar, where...

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Detalles Bibliográficos
Autores principales: Möws, Katrin, Schürmann, Markus, Preut, Hans, Plietker, Bernd
Formato: Texto
Lenguaje:English
Publicado: International Union of Crystallography 2009
Materias:
Organic Papers
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2970087/
https://www.ncbi.nlm.nih.gov/pubmed/21577549
http://dx.doi.org/10.1107/S1600536809030918
Descripción
Sumario:An intra­molecular Claisen-like cyclization of ethyl 2-acet­oxy-4,4-dimethyl-1-(3-methyl­but-2-en­yl)cyclo­hex-2-enecarboxylate followed by dialkyl­ation yielded the bicyclic title compound, C(23)H(26)O(4). In both of the fused six-membered rings exist fragments of four atoms which are planar, whereas the remaining two atoms deviate by up to 0.682 (3) Å on one side of the plane of the ring containing an O atom and by up to 0.415 (3) Å on opposite sides of the other ring. The dihedral anglebetween the planar fragments of the six-membered rings is 41.76 (10)°

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