Collect. Czech. Chem. Commun. 1986, 51, 408-411

Synthesis of 13,13,13a,15,15-pentamethyl-6H,7H,13H,13aH,15H-1,4-diazepino[1,7a :4,5a']diindole and the structure of its perchlorate

Algirdas Šačkusa, Stanislav Smrčekb, Petr Trškab and Otakar Červinkab

a Department of Organic Chemistry, Polytechnical Institute of Atanas Snieckus, 233 037 Kaunas, U.S.S.R.
b Department of Organic Chemistry, Prague Institute of Chemical Technology, 166 28 Prague 6, Czechoslovakia


Condensation of 2,3,3-trimethyl-3H-indole (I) with 1,2-dibromoethane gave base V, affording perchlorate III. In strongly acid solutions both the base and its perchlorate got converted into disalt IV.