Synthesis, structure and catalytic activity of new chiral nitrogen-containing ligands

Abstract

The use of nitrogen-containing ligands for asymmetric catalysis has received growing interest in the last years. In this paper we report the synthesis of three new ligands (5c, 5d and 6) and the X-ray structure analysis of 5c and of the copper(II) complex 6-Cu(II)OTf. The catalytic activity of the ligands was tested in standard asymmetric reactions, but in most of the cases only low yields and poor enantioselectivity was obtained. (C) 2003 Elsevier B.V. All rights reserved.