Dimethylamine → 1-Dimethylamino-7-(3-phthalimido)propoxy-3,4-dihydronaphthalene

Participants

Reaction Conditions

Reaction Steps

A solution of titanium tetrachloride (5.4 g) in toluene (20 ml) is added over a period of 15 minutes to a stirred solution of 7-(3-phthalimido)propoxy-1-tetralone (19.9 g) suspended in a solution of anhydrous dimethyl amine (22 g) in dry toluene (200 ml) while maintaining a reaction temperature of about 1° C. under a N2 atmosphere. When the addition is complete, the reaction mixture is allowed to warm to RT and stirred at RT for 41/2 hours. The reaction mixture is filtered, the salts washed with dry toluene and the clear filtrate evaporated, affording a light yellow oil, which is stored under N2 and used in the next step without any further treatment.

Provenance & Evidence