B. Pete, F. Varga, J. Kovács
2004
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Abstract
Valuable new synthetic intermediates, 4-, 5- or 6-chloromethyl-1H-indole-2-carboxylates, were prepared by the facile elimination of SO2 from 2-ethoxycarbonyl-1H-indole-4-, 5- or 6-methanesulfonic acids, respectively, easily accessible by Fischer-type indolization.