InBr3-catalyzed intramolecular cyclization of 2-alkynylanilines leading to polysubstituted indole and its application to one-pot synthesis of an amino acid precursor
作者:Norio Sakai、Kimiyoshi Annaka、Takeo Konakahara
DOI:10.1016/j.tetlet.2005.11.121
日期:2006.1
We describe InBr3-catalyzed cyclization of 2-alkynylaniline derivatives having a variety of functional groups producing polysubstituted indoles. This methodology could be applied to the one-pot synthesis of an amino acid precursor by the addition of a catalytic amount of the indium salt, an imine, and TMSCl.
Facile stereoselective synthesis of 1,3-disubstituted-4-trichloromethyl azetidin-2-ones
作者:V.V. Govande、A.R.A.S. Deshmukh
DOI:10.1016/j.tetlet.2004.07.047
日期:2004.8
The highly stereoselective synthesis of 1,3-disubstituted-4-trichloromethyl azetidin-2-ones by the [2+2] cycloaddition of ketenes with imines derived from chloral is described. (C) 2004 Elsevier Ltd. All rights reserved.
Biomimetic Reductive Amination of Fluoro Aldehydes and Ketones <i>via</i> [1,3]-Proton Shift Reaction.<sup>1</sup> Scope and Limitations
作者:Taizo Ono、Valery P. Kukhar、Vadim A. Soloshonok
DOI:10.1021/jo960503g
日期:1996.1.1
proceed essentially (>98%) intramolecularly with isotope exchange experiments. High chemical yields, the simplicity of the experimental procedure, and the low cost of all reagents employed make this biomimetic transamination of fluorocarbonyl compounds a practical method for preparing fluorine-containing amines of biological interest.