Lithium Bromide as a Flexible, Mild, and Recyclable Reagent for Solvent-Free Cannizzaro, Tishchenko, and Meerwein−Ponndorf−Verley Reactions

Lithium Bromide as a Flexible, Mild, and Recyclable Reagent for Solvent-Free Cannizzaro, Tishchenko, and Meerwein−Ponndorf−Verley Reactions

A room temperature convenient disproportionation or reduction of aldehydes prompted by lithium bromide and triethylamine is described in a solvent-free environment. Distribution of the products to selectively direct the process toward Cannizzaro or Tishchenko reactions is controlled by the type of w...

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Veröffentlicht in:Organic letters 2007-07, Vol.9 (15), p.2791-2793
Hauptverfasser: Mojtahedi, Mohammad M, Akbarzadeh, Elahe, Sharifi, Roholah, Abaee, M. Saeed
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Sprache:eng
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Aldehydes - chemistry
Bromides - chemistry
Indicators and Reagents - chemistry
Lithium Compounds - chemistry
Solvents - chemistry
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container_end_page 2793
container_issue 15
container_start_page 2791
container_title Organic letters
container_volume 9
creator Mojtahedi, Mohammad M
Akbarzadeh, Elahe
Sharifi, Roholah
Abaee, M. Saeed
description A room temperature convenient disproportionation or reduction of aldehydes prompted by lithium bromide and triethylamine is described in a solvent-free environment. Distribution of the products to selectively direct the process toward Cannizzaro or Tishchenko reactions is controlled by the type of workup selection. The presence of hydrogen donor alcohols in the mixture completely diverts the process toward the Meerwein−Ponndorf−Verley reaction.
doi_str_mv 10.1021/ol070894t
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subjects Aldehydes - chemistry
Bromides - chemistry
Indicators and Reagents - chemistry
Lithium Compounds - chemistry
Solvents - chemistry
title Lithium Bromide as a Flexible, Mild, and Recyclable Reagent for Solvent-Free Cannizzaro, Tishchenko, and Meerwein−Ponndorf−Verley Reactions
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