Synthesis of aminoethanethiol trityl ether ligands for ruthenium-catalysed asymmetric transfer hydrogenation
摘要:
A series of chiral aminoethanethiol ethers was synthesised by the regioselective and stereospecific ring opening of the (R)trityl(thiiranylmethyl)ether and examined in the hydrogen transfer reduction of different aromatic ketones. High conversions (>99%) and enantioselectivities (91%) were obtained under mild reaction conditions. (C) 2004 Elsevier Ltd. All rights reserved.