Toward Improving the Chemistry of N-Acyliminium Ions: Nucleophilic Substitution Reactions of Pyrrolidinone Derivatives with Trialkylsilyl Nucleophiles Catalyzed by Triisopropylsilyltrifluoromethane Sulfonate (TIPSOTf)
摘要:
Nucleophilic substitution reactions of racemic and chiral 5-acetoxy-, 5-ethoxy-, and 5-methoxypyrrolidin-2-ones by silicon-based nucleophiles were efficiently catalyzed by TIPSOTf. This process was found to be general and accommodates a broad range of substrate-nucleophile combinations.
Eco-friendly N-acyliminium ion chemistry: solvent-free HNTf2 and TIPSOTf-catalyzed α-amidoalkylation of silicon-based π-nucleophiles
作者:Marie-José Tranchant、Charlotte Moine、Raja Ben Othman、Till Bousquet、Mohamed Othman、Vincent Dalla
DOI:10.1016/j.tetlet.2006.04.090
日期:2006.6
The alpha-amidoalkylation of silicon-based pi-nucleophiles is efficiently catalyzed by HNTf2 or TIPSOTf at very low levels of loading in neat conditions. (c) 2006 Elsevier Ltd. All rights reserved.
Toward Improving the Chemistry of <i>N</i>-Acyliminium Ions: Nucleophilic Substitution Reactions of Pyrrolidinone Derivatives with Trialkylsilyl Nucleophiles Catalyzed by Triisopropylsilyltrifluoromethane Sulfonate (TIPSOTf)
作者:Raja Ben Othman、Till Bousquet、Anthony Fousse、Mohamed Othman、Vincent Dalla
DOI:10.1021/ol050576z
日期:2005.7.1
Nucleophilic substitution reactions of racemic and chiral 5-acetoxy-, 5-ethoxy-, and 5-methoxypyrrolidin-2-ones by silicon-based nucleophiles were efficiently catalyzed by TIPSOTf. This process was found to be general and accommodates a broad range of substrate-nucleophile combinations.