Saturated heterocycle-condensed diphenylisoindolones: Fused-skeleton tetrahydro-1,3-oxazines, oxazolidines and imidazolidines

Article abstract of DOI:10.1016/0022-2860(96)09311-8

The addition of benzene to cis-4-cyclohexene-1,2-dicarboxylic anhydride yielded c-2-benzoyl-t-5-phenyl-r-1-cyclohexanecarboxylic acid (72%), or in another reaction, the 4-phenyl isomer (67%). With bifunctional reagents, saturated tricyclic or partially sa