Yu. A. Degutis, A. A. Schachkus, A. G. Urbonavichyus
Jul 1, 1985
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Journal
Chemistry of Heterocyclic Compounds
Abstract
In the reaction of 2,3,3-trimethyl-3H-indole with α-chloro- and α-iodoacetamides, 1-carbamoylmethyl-2,3,3-trimethyl-3H-indolium salts are formed, which by the action of bases convert into imidazo[1,2-a]indol-2-one and 1-carbamoyl-2-methylene-2,3-dihydroindole. The latter compound can by cyclized into imidazo[1,2-a]indol-2-one by the action of acetic acid.