Abstract
An unusual hydrolytic cleavage with 1,2-alkyl chain migration of 1-chloromethyl-tetrahydropyrano[3,4- b]indoles by heating with a limited amount of water and base in DMF is reported. A mechanism for the formation of 1,2-alkyl chain migration products, 2-succinoyl tryptophols, and the ring-expansion products, dihydro-oxepine fused indoles, is reported. No comparable 1,2-chain migration from a structurally related 1-chloromethyl-isochroman is observed.
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