Patent GB-1051280-A (GB)
IPC: C07D295/033
Abstract: 1,051,280. 4,4-Diphenylcyclohexylamines. E. MERCK A. G. Nov. 9, 1965 [Dec. 15, 1964], No. 47445/65. Heading C2C. Novel compounds of the Formula I wherein R<SP>1</SP> represents a hydrogen atom or an alkyl, alkenyl, or alkynyl group of up to 6 carbon atoms, and R<SP>2</SP> and R<SP>3</SP>, the same or different, represent hydrogen atoms or alkyl or alkenyl groups of up to 8 carbon atoms, a C 3-8  cycloalkyl group, or an ar(C 1-4  alkyl) group wherein the aromatic part may be substituted by a methylenedioxy group or mono- or poly-substituted with a C 1-4  alkyl, methoxy, ethoxy or hydroxy group or a chlorine atom, or R<SP>2</SP> and R<SP>3</SP>, together with the nitrogen atom to which they are attached, form a pyrrolidine or piperidine ring which may, if desired, be substituted with a methyl or ethyl group; and the corresponding compounds where the cyclohexane ring is unsaturated in the 2,3-position and/or the phenyl groups substituted in the 4-position of the cyclohexane ring are substituted with a methylenedioxy group or mono- or poly-substituted with a C 1-4  alkyl, methoxy, ethoxy or hydroxy group or a chlorine atom; and acid addition and quaternary ammonium salts thereof, are prepared by reducing a compound of the formula II, wherein X represents or another group convertible to the group -NR<SP>2</SP>R<SP>3</SP> by reduction; R<SP>11</SP> representing a C 1-8  alkylidene, a C 3-8  cycloalkylidene or an ar(C 1-4  alkylidene) group, the aromatic part of which may be substituted similarly to the phenyl groups substituted in the 4-position of the cyclohexane ring; by reacting a compound of the Formula IV wherein Y represents where Hal represents a chlorine, bromine, or iodine atom, with a base of the formula R<SP>2</SP>R<SP>3</SP>NH; by alkylation of compounds of the Formula I wherein R<SP>2</SP> and/or R<SP>3</SP> represent(s) a hydrogen atom or atoms; or by liberating the hydroxy and/or amino group or groups of compounds corresponding to those of the Formula I but which contain one or more protected hydroxyl groups and/or a protected amino group, and, if desired, converting a resulting base into an acid addition or quaternary ammonium salt. Cyclohexanones and cyclohexanols of the Formula IV may be prepared by reacting diphenylacetaldehydes with methylvinyl ketone to give 4,4-diphenylcyclohexen-(2)-ones followed by reduction. Oximes, Schiff's bases, hydrazones and azines of the Formula II are prepared by reacting the corresponding ketones with hydroxylamine, amines and hydrazine respectively. Schiff's bases of the Formula II may also be prepared by reacting amines of the Formula I with aldehydes or ketones. 1-Nitro- and 1-phthalimido-4,4-diphenylcyclohexanes of the Formula II may be prepared by reacting the corresponding 1-halo-compounds with silver nitrate and potassium phthalimide respectively. Ethers of the Formula IV may be prepared by etherification of the corresponding cyclohexanols. Cyclohexen-(2)-ols of the Formula IV may be prepared from the corresponding cyclohexen-(2)- ones by reduction with lithium aluminium hydride. Ketones of the Formula IV, wherein R<SP>1</SP> is not hydrogen, may be prepared by reacting the corresponding ketones, wherein R<SP>1</SP> represents hydrogen, with primary amines, reacting the resulting Schiff's bases with a Grignard reagent, alkylating the thus produced N-metallized enamines and hydrolysing the resulting 2- alkylated Schiff's base. 1 - Phthalimido - 2 - propargyl - 4,4 - diphenylcyclohexane may be prepared by reacting 1- phthalimido - 2 - allyl - 4, 4 - diphenylcyclohexane with bromine and dehydrohalogenating the resulting dibromide. Therapeutic compositions with spasmolytic, cholinolytic, coronary circulating, and hypertensive properties, in the forms of solutions, suspensions, emulsions, implants, tablets, and dragees for parenteral and enteral application, comprise compounds of the Formula I and their acid addition and quaternary ammonium salts together with a physiologically acceptable carrier.