Diethylene Glycol → HCID 20339673, compound

Participants

Reaction Steps

9.3 Parts of 2-(2,2-diphenylethyl-1-azabicyclo[2.2.2]octan-3-one, 1.3 parts of potassium hydroxide, 3.6 parts by volume of an 85% solution of hydrazine in water and 59 parts diethylene glycol are refluxed together, with stirring, under nitrogen for 2.75 hours. Stirring and heating are then discontinued and the reaction mixture is allowed to stand overnight. The mixture is then heated to distill under nitrogen until a head temperature of 235° C. is reached. After cooling to room temperature, the mixture is partitioned between 900 parts by volume of 5% sodium chloride solution and two 600 parts by volume portions of ethyl ether. The ethereal extracts are combined, washed with water, dried over anhydrous sodium sulfate and stripped in vacuo to give an residual oil which solidifies upon standing. This solid is dissolved in 300 parts by volume of hot n-pentane. The solution is then concentrated on the steam bath to 45 parts by volume and cooled to room temperature to give a solid precipitate which is filtered off, washed with n-pentane and dried in vacuo to give a white solid 2-(2,2-diphenylethyl)-1-azabicyclo[2.2.2]octane, melting at about 87.5°-89° C. This compound is represented by the following structural formula ##STR4##

Provenance & Evidence