Organotellurides as a source of organometallics: application in the synthesis of (+/−)-frontalin
作者:Alcindo A. Dos Santos、Renan S. Ferrarini、Jefferson L. Princival、João V. Comasseto
DOI:10.1016/j.tetlet.2006.10.039
日期:2006.12
A maskedlithiumhomoenolate, generated by tellurium/lithium exchange, was reacted with epoxides. The lithium compound was also converted into other organometallics such as Grignard, and cuprates and the reactivity of those organometallics with epoxides was evaluated. The same building block was employed in the synthesis of (+/−)-frontalin.
Tellurium in organic synthesis: a new approach to trisubstituted γ-butyrolactones with trans–trans relative stereochemistry. Total enantioselective synthesis of (−)-Blastmycinolactol, (+)-Blastmycinone, (−)-NFX-2, and (+)-Antimycinone
作者:Renan S. Ferrarini、Alcindo A. Dos Santos、João V. Comasseto
DOI:10.1016/j.tetlet.2010.10.089
日期:2010.12
The total synthesis of (-)-Blastmycinolactol, (+)-Blastmycinone, (-)-NFX-2, and (+)-Antimycinone was accomplished in few steps in high yields and ee, starting from enantiomerically enriched (S)-Z-vinylic hydroxytellurides. (C) 2010 Published by Elsevier Ltd.
Functionalized organozincates and organocuprates derived from γ-hydroxytellurides in the preparation of 1,4-hydroxyketones
作者:Jefferson L. Princival、Alcindo A. Dos Santos、João V. Comasseto
DOI:10.1016/j.tetlet.2009.08.097
日期:2009.11
A C-O-dianionic zincate was generated by a Te/Li exchange reaction of an alkyltelluride, followed by Li/Zn transmetallation and reaction with methyllithium. The reaction between the enantiomerically pure (99% ee) (R)-dianionic zincate and benzoyl chloride led to 3-hydroxy-1-phenyl pentanone with total retention of the carbon configuration (99% ee). Similar results were obtained using the corresponding Lipshutz cyanocuprates. (C) 2009 Elsevier Ltd. All rights reserved.
Baroni, Atti della Accademia Nazionale dei Lincei, Classe di Scienze Fisiche, Matematiche e Naturali, Rendiconti, 1938, vol. <6>27, p. 241
作者:Baroni
DOI:——
日期:——
TALBOT J.-M.; PIETTE J.-L.; RENSON M., BULL. SOC. CHIM. BELG., 1980, 89, NO 9, 763-771