caa a22 4500 467952248 CHVBK 20180405193743.0 cr unu---uuuuu 170328e20041101xx s 000 0 eng 10.1007/s10593-005-0067-x doi (NATIONALLICENCE)springer-10.1007/s10593-005-0067-x (NATIONALLICENCE)springer-10.1007/PL00021792 Synthesis of 3,9,9,9a-tetramethyl-1,2,3,9a-tetrahydro-9H-imidazo[1,2- a ]-indol-2-ones by reaction of 2,3,3-trimethyl-3H-indole with 2-bromopropionamides [Elektronische Daten] [E. Valaityte, V. Martynaitis, A. Sackus] Alkylation of 2,3,3-trimethyl-3H-indole with 2-bromopropionamide and the subsequent treatment of the formed 1-(1-carbamoylethyl)-2,3,3-trimethyl-3H-indolium bromide with a base afforded 3,9,9,9a-tetramethyl-1,2,3,9a-tetrahydro-9H-imidazo[1,2-a]indol-2-one. Condensation of the 1-(1-carbamoylethyl)-2,3,3-trimethyl-3H-indolium salt with 2-hydroxy-1-naphthaldehyde gave a mixture of diastereomeric 1-(1-carbamoylethyl)spiro[2H-indole-2,3'-[3H]naphtho[2,1-b]pyrans]. Springer Science+Business Media, Inc., 2004 2-bromopropionamide nationallicence imidazo[1,2- a ]indole nationallicence spiro[2H-indole-2,3'-[3H]naphtho[2,1- b ]-pyran] nationallicence 2,3,3-trimethyl-3H-indole nationallicence Valaityte E. Department of Organic Chemistry, Kaunas University of Technology, LT-3028, Kaunas, Lithuania aut Martynaitis V. Department of Organic Chemistry, Kaunas University of Technology, LT-3028, Kaunas, Lithuania aut Sackus A. Department of Organic Chemistry, Kaunas University of Technology, LT-3028, Kaunas, Lithuania aut Chemistry of Heterocyclic Compounds Kluwer Academic Publishers-Consultants Bureau 40/11(2004-11-01), 1460-1464 0009-3122 40:11<1460 2004 40 10593 https://doi.org/10.1007/s10593-005-0067-x text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10593-005-0067-x text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Valaityte E. Department of Organic Chemistry, Kaunas University of Technology, LT-3028, Kaunas, Lithuania aut NATIONALLICENCE 700 1- Martynaitis V. Department of Organic Chemistry, Kaunas University of Technology, LT-3028, Kaunas, Lithuania aut NATIONALLICENCE 700 1- Sackus A. Department of Organic Chemistry, Kaunas University of Technology, LT-3028, Kaunas, Lithuania aut NATIONALLICENCE 773 0- Chemistry of Heterocyclic Compounds Kluwer Academic Publishers-Consultants Bureau 40/11(2004-11-01), 1460-1464 0009-3122 40:11<1460 2004 40 10593 NATIONALLICENCE 856 40 https://doi.org/10.1007/PL00021792 text/html Onlinezugriff via DOI Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE NATIONALLICENCE NL-springer