SYNTHESIS, STRUCTURE, AND PHYSICOCHEMICAL PROPERTIES OF 3-METHYL AND 3,3-DIMETHYL DERIVATIVES OF 1-(4',4'-DIMETHYL-2',6'-DIOXOCYCLOHEX-1'-YL)-3,4-DIHYDROISOQUINOLINE Article DAVYDOV Y.V., SOKOL Y.I., BALEBANOVA E.V., SHKLYAEV Y.V., SERGEEV S.V., NIKANOROV V.A., ZAITSEV B.E., PORAIKOSHITS M.A. Russian Chemical Bulletin. Vol. 42. 1993. P. 288-294