Preparation of benz[b]indeno[1,2-e]pyran-11(6H)-ones and benz[b]indeno[1,2-e]thiopyran-11(6H)-one from dilithiated 2-indanone and lithiated methyl salicylates or lithiated methyl thiosalicylate

Article abstract of DOI:10.1080/00397910008087371

Dilithiated 2-indanone was prepared with excess lithium diisopropylamide, and the resulting intermediate was condensed with several lithiated methyl salicylates or lithiated methyl thiosalicylate, which was followed by acid cyclization to benz[b]indeno[1,2-e]pyran-11(6H)-ones 3-9 or benz[b]indeno[1,2-e]thiopyran-11(6H)-one 10, which are rare fused-ring indeno-chromones and a new indeno-thiochromone, respectively.

Full text of DOI:10.1080/00397910008087371

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Synthetic Communications: An
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Preparation of
Benz[b]Indeno[1,2-
e]Pyran-11(6H)-Ones
and Benz[b]Indeno[1,2-
e]Thiopyran-11(6H)-One from
Dilithiated 2-Indanone and
Lithiated Methyl Salicylates or
Lithiated Methyl Thiosalicylate
Jessica D. Townsend a , Angela R. Williams a , April
J. Angel a , Anne E. Finefrock a & Charles F. Beam a
a Department of Chemistry and Biochemistry College
of Charleston, Charleston, South Carolina, 29424
Published online: 04 Dec 2007.
To cite this article: Jessica D. Townsend , Angela R. Williams , April J. Angel ,
Anne E. Finefrock & Charles F. Beam (2000): Preparation of Benz[b]Indeno[1,2-
e]Pyran-11(6H)-Ones and Benz[b]Indeno[1,2-e]Thiopyran-11(6H)-One from Dilithiated
2-Indanone and Lithiated Methyl Salicylates or Lithiated Methyl Thiosalicylate,
Synthetic Communications: An International Journal for Rapid Communication of
Synthetic Organic Chemistry, 30:4, 689-699
To link to this article: http://dx.doi.org/10.1080/00397910008087371

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