Synthesis of 5-substituted indole derivatives. Part 3: A facile synthesis of 5-chloromethyl-1H-indole-2-carboxylates: replacement of sulfonic acid functionality by chlorine
B. Pete et L. Toke, Synthesis of 5-substituted indole derivatives. Part 3: A facile synthesis of 5-chloromethyl-1H-indole-2-carboxylates: replacement of sulfonic acid functionality by chlorine, TETRAHEDR L, 42(19), 2001, pp. 3373-3375
Valuable new synthetic intermediates, 5-chloromethyl-1H-indole-2-carboxylat
es, were prepared by the elimination of SO2 from 2-ethoxycarbonyl-1H-indole
-5-methanesulfonic acids, which are easily accessible by Fischer-type indol
ization. (C) 2001 Elsevier Science Ltd. All rights reserved.