Abstract: 5,6,-dihydro-pyrrolo[2,1-a]isoquinolines of the formula ##STR1## are prepared by heating a 1-(3-furyl)-3,4-dihydro-isoquinoline of the formula ##STR2## in a primary or secondary amine to at least 80.degree. C. for several hours, the amine is removed, the reaction product is treated with dilute acid, and the reaction product is purified and isolated.

Abstract: The invention relates to 5,6-dihydro-pyrrolo[2,1-a]isoquinolines of the formula ##STR1## wherein R, R.sup.2, R.sup.3, and R.sup.7, which may be identical or different, each represent a hydrogen atom or an alkyl group having from 1 to 4 carbon atoms;R.sup.1 represents a cyano, hydroxycarbonyl, or alkoxycarbonyl group having from 1 to 4 carbon atoms or a primary or secondary, substituted or unsubstituted, aliphatic, cycloaliphatic, araliphatic, aromatic, or heterocyclic aminocarbonyl group;R.sup.4 and R.sup.8, which may be identical or different, each represent a hydrogen atom, a hydroxyl group, an alkoxy or alkylthio group having up to 4 carbon atoms, or an NR.sup.9 R.sup.10 group;R.sup.5 and R.sup.6, which may be identical or different, each represent a hydroxy atom or an alkoxy or alkylthio group having from 1 to 4 carbon atoms, or together represent an --O--CH.sub.2 --O--, --O--CH.sub.2 --CH.sub.2 --O--, or --O--CH.dbd.CH--O group;R.sup.