Sarioez, O.Abdullah, M. I.2019-08-012019-08-0120061070-42801608-3393https://dx.doi.org/10.1134/S107042800606011Xhttps://hdl.handle.net/11480/5515Reactions of indole, 1-methylindole, and 3-methylindole with dimethyl acetylenedicarboxylate in the presence of K10 montmorillonite as a catalyst led to the formation of the corresponding dimethyl 2,2-bis(indolyl)butanedioates. The reaction of 2-methylindole with dimethyl acetylenedicarboxylate gave dimethyl 2-(2-methyl-1H-indol-3-yl)maleate and dimethyl 2-methyl-1H-1-benzoazepine-3,,4-dicarboxylate. Dimethyl 1,5-dimethyl-1H-1-benzoazepine-3,4-dicarboxylate was obtained by treatment of 1,3-dimethylindole with dimethyl acetylenedicarboxylate using K 10 clay as a catalyst.eninfo:eu-repo/semantics/closedAccessElectrophilic substitution reactions of indole alkaloids with alpha,beta-unsaturated carbonyl compounds in the presence of K10 montmorilloniteArticle42687988210.1134/S107042800606011X2-s2.0-33745879171Q4WOS:000239375600011Q4