A highly regioselective Friedländer reaction mediated by lanthanum chloride
摘要:
A highly efficient and regioselective Friedlander reaction of unsymmetrical 1,3-diketones with 2-aminoaryl aldehydes (ketones) is described. The methodology leads to the synthesis of a broad scope of substituted quinolines in high yield and excellent regioselectivity. (C) 2012 Elsevier Ltd. All rights reserved.
HFO‐1234yf as a CF
<sub>3</sub>
Building Block: Synthesis of Trifluoromethyl Quinoline and Chromene Derivatives from Trifluoromethyl‐ynones
作者:Thomas G. F. Marsh、Alessia Santambrogio、Ben J. Murray、Lee T. Boulton、Juan A. Aguilar、Dmitry S. Yufit、Graham Sandford、William D. G. Brittain
DOI:10.1002/ejoc.202300058
日期:2023.3.14
Trifluoromethylynones derived from the refrigerant HFO-1234yf undergo a tandem Michael addition-cyclisation reaction with 2-amino or 2-hydroxyaryl carbonyls to form 2-trifluoromethylquinolines and 2-trifluoromethyl-2-hydroxychromenes, respectively, in a single step. Thus generating pharmaceutically relevant structures from an inexpensive feed-stock.