J. Ezquerra et al., CONFORMATIONALLY CONSTRAINED SEROTONIN ANALOGS - STEREOSELECTIVE SYNTHESIS OF TRANS-3-(2-AMINOCYCLOALKYL)INDOLES BY AZIRIDINE RING-OPENING, Tetrahedron letters, 37(5), 1996, pp. 683-686
Trans-3-(2-aminocyclopentyl)indoles 9a,c and trans-3-(2-aminocyclohexy
l)indoles 9b,d have been stereoselectively prepared by nucleophilic ri
ng opening reaction of N-Boc cycloalkylaziridines 6a,b and the ''lower
order'' magnesium cuprate II, generated from the corresponding indoli
lmagnesium bromides derived from 7a,b.