Abstract A series of N-substituted carbamates V-XIII was prepared by reactions of 6, 11- dihydrodibenzo [b, e] thiepin-11-ol (I) with carbamates H 2 NCOOR in acetic acid. Whereas the Leuckart reaction of dibenzo [b, e] thiepin-11 (6H)-one yielded 9-formamido-10- methylene-9, 10-dihydroanthracene (XVIII), a satisfactory method for preparing the amine III was found in heating the carbamate V with 2-aminoethanol to 170 C. Reactions of the ...