A novel approach for the synthesis of Crizotinib through the key chiral alcohol intermediate by asymmetric hydrogenation using highly active Ir-Spiro-PAP catalyst
作者:Jian-Qiang Qian、Pu-Cha Yan、Da-Qing Che、Qi-Lin Zhou、Yuan-Qiang Li
DOI:10.1016/j.tetlet.2014.01.053
日期:2014.2
A novel approach for the synthesis of Crizotinib (1) is described. In addition, new efficient procedures have been developed for the preparation of (S)-1-(2,6-dichloro-3-fluorophenyl)ethanol (2) and tert-butyl 4-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazol-1-yl)piperidine-1-carboxylate (4), the key intermediates required for the synthesis of Crizotinib. (C) 2014 Elsevier Ltd. All rights reserved.