Abstract: | The cyclization of 1-R-2-(-aminoisobutyl)indoles with various cyclic ketones forms imines or spiro compounds of the 1,2,3,4-tetrahydro--carboline series, depending on the conditions and the structure of the ketone.For communication XL, see [1].Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 7, pp 942–944, July, 1973. |