N-Methyl-1,2-diphenylethylamine and

N-Methyl-1,2-diphenylethylamine AND HYDROCHLORIDE, 34, 64 2-Methyldodecanoic acid, 38, 43, 47, 49 2-Methyl-2-dodecenoic acid, 38, 49,50 trans-2-Methyl-2-dodecenoic acid,... 

C. N-Methyl-, 2-diphenylethylamine hydrochloride. Hydrogen chloride gas (Note 4) is passed into a stirred solution of 30 g. (0.14 mole) of N-methyl-l,2-diphenylethylamine in 500 ml. of anhydrous ether until saturated or until a drop of the ether on moistened pH test paper indicates that it is strongly acid. The hydrochloride separates as a colorless crystalline precipitate. It is collected on a suction filter, washed with ether, and dried. The yield is 34.2-35.1 g. (97.5-100%), and the product is practically pure, m.p. 184-186°. If desired it can be recrystallized by dissolution in a little methanol followed by addition of absolute ether. 

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