Synthesis of the 8-aminoquinoline antimalarial 5-fluoroprimaquine
摘要:
Several approaches to the synthesis of 5-fluoro-6-methoxy-8-nitroquinoline 5, the key intermediate required for the synthesis of 9-fluoroprimaquine, were investigated. In one approach, 5-chloro-6-methoxy-8-nitroquinoline was synthesised and treated with a variety of nucleophilic sources of fluoride. In another approach, electrophilic substitution of 6-methoxy-8-nitroquinoline with (N-fluorosulfonimide, NFS1) was investigated. The final approach to 5 involved a modified Skraup reaction of 5-fluoro-4-methoxy-2-nitroaniline which gave the required intermediate in 30% yield. (C) 1998 Published by Elsevier Science Ltd. All rights reserved.
Selective direct fluorination of quinoline derivatives
作者:Richard D Chambers、Darren Holling、Graham Sandford、Horst Puschmann、Judith A.K Howard
DOI:10.1016/s0022-1139(02)00156-2
日期:2002.10
Direct fluorination of various quinoline derivatives in acidic reaction media gives fluorinated quinoline products arising from selective, efficient electrophilic substitution processes. (C) 2002 Elsevier Science B.V. All rights reserved.
Elemental fluorine
作者:Richard D. Chambers、Darren Holling、Graham Sandford、Andrei S. Batsanov、Judith A.K. Howard
DOI:10.1016/j.jfluchem.2003.11.012
日期:2004.5
Direct fluorination of various quinoline derivatives in acidic reaction media gives fluorinated quinoline products arising from electrophilic substitution processes. (C) 2003 Elsevier B.V. All rights reserved.