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Synlett 1999; 1999(5): 567-568
DOI: 10.1055/s-1999-2679
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Tellurium and Iodine Promoted Cyclofunctionalization of Alkenyl Substituted β-Keto Esters

H. M. C. Ferraz* , M. K. Sano, A. C. Scalfo
  • *Instituto de Química, Universidade de São Paulo, C.P. 26077, 05599-070 São Paulo-SP, Brazil; Fax 55-11-8 15-55 79; E-mail: hmferraz@quim.iq.usp.br
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Publication Date:
31 December 1999 (online)

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This work describes the use of aryltellurium trichloride and iodine as suitable cyclization reagents for alkenyl substituted β-keto esters. The reaction takes place via the enolic form of the dicarbonyl compounds, giving the corresponding five-membered cyclic ethers in good yields.

cyclization - carbonyl compounds - tellurium and iodine compounds