Jg. Rodriguez et A. Urrutia, REACTION OF 4A-METHYL-2,3,4,4A-TETRAHYDRO-1H-CARBAZOLE WITH GRIGNARD-REAGENTS, Journal of the Chemical Society. Perkin transactions. I, (6), 1995, pp. 665-667
Reaction of the 4a-methyl-2,3,4,4a-tetrahydro-1H-carbazole 1 with orga
nomagnesium halides in the presence of Cu2Cl2 forms only the cis-4a,9a
-dialkylhexahydrocarbazole derivatives 2 through a radical mechanism.
Characterization of the cis-ring junction formation was confirmed by t
he alkylation of an eta(6)-tricarbonylchromium complex of the 4a-methy
l derivative 1.