Utilization of perfluoroalkanoate-derived aluminium acetals as the convenient fluorinated aldehyde precursors
摘要:
Aluminium acetals from the DIBAL partial reduction of perfluoroalkanoates 1 were successfully employed as the convenient and useful fluorinated aldehyde precursors, and reactions of such intermediates with sodium salts from some beta-dicarbonyl compounds 2 as well as their possible utility as the Michael acceptors after transformation to the corresponding alkylidene malonates 8 were also demonstrated. (C) 2011 Elsevier Ltd. All rights reserved.
Utilization of perfluoroalkanoate-derived aluminium acetals as the convenient fluorinated aldehyde precursors
摘要:
Aluminium acetals from the DIBAL partial reduction of perfluoroalkanoates 1 were successfully employed as the convenient and useful fluorinated aldehyde precursors, and reactions of such intermediates with sodium salts from some beta-dicarbonyl compounds 2 as well as their possible utility as the Michael acceptors after transformation to the corresponding alkylidene malonates 8 were also demonstrated. (C) 2011 Elsevier Ltd. All rights reserved.
Unexpected and Expeditious Entry into Trifluoromethyl Aziridines from Substituted β-Dicarbonyl Compounds
作者:Daniele Colantoni、Stefania Fioravanti、Lucio Pellacani、Paolo A. Tardella
DOI:10.1021/jo0515327
日期:2005.11.1
One-pot aziridinations were obtained starting from substituted 2,2,2-trifluoroethyl β-dicarbonylcompounds with nosyloxycarbamates in the presence of an excess of CaO as base. The unexpected ringclosure reaction takes place at room temperature, leading to the N-protected α-trifluoromethyl aziridines with good yields. The reaction pathway seems to be influenced by the choice of the base.
Aluminium acetals from the DIBAL partial reduction of perfluoroalkanoates 1 were successfully employed as the convenient and useful fluorinated aldehyde precursors, and reactions of such intermediates with sodium salts from some beta-dicarbonyl compounds 2 as well as their possible utility as the Michael acceptors after transformation to the corresponding alkylidene malonates 8 were also demonstrated. (C) 2011 Elsevier Ltd. All rights reserved.