Tellurium / Lithium Exchange Reaction in the Synthesis of Spiroketals and 1,6-dioxigenated Systems

Alcindo Dos Santos; Jefferson Princival; João Comasseto; Simone de Barros

doi:10.3390/ecsoc-10-01433

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Tellurium / Lithium Exchange Reaction in the Synthesis of Spiroketals and 1,6-dioxigenated Systems

Alcindo A. Dos Santos

^{*

1},

Jefferson L. Princival

²,

João V. Comasseto

¹,

Simone M. G. de Barros

¹ Instituto de Química, Universidade de São Paulo, C. P. 26077, 05599-070, São Paulo SP, Brazil
² Departamento de Química Fundamental, Universidade Federal de Pernambuco, 50740-540, Recife PE, Brazil

Published: 30 November 2006 by MDPI in The 10th International Electronic Conference on Synthetic Organic Chemistry session Symposium on Selenium and Tellurium Chemistry

https://doi.org/10.3390/ecsoc-10-01433

Abstract: 1,4-C,O-dianions, produced through concomitant acid / base and tellurium / lithium exchange reactions were generated. The di-lithium salts were transmetallated with CeCl 3 to the corresponding di-cerium salts and reacted with carbonyl compounds yielding spiroketals. The di-lithium entities were also converted into the corresponding cyanocuprates which add in a 1,4-maner to 2-cyclohexen-1- one giving 1,6-dioxigenated compounds.

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Alcindo Dos Santos

Jefferson Princival

João Comasseto

Simone de Barros