Benzene → 2-[2-[2-[4-(Diphenylmethylene)-1-piperidinyl]ethoxy]ethoxy]-acetamide

Participants

Reaction Conditions

Reaction Steps

A mixture of 29.9 g of 4-(diphenylmethylene)-piperidine, 36.3 g of 2-[2-(2-chloroethoxy)ethoxy]-acetamide and 18 g of sodium carbonate in 80 ml of xylene is heated for 20 hours at a temperature of from 90°to 110° C. Thereafter, 80 ml of benzene are added thereto. The precipitate obtained is filtered off and the organic phase is extracted with a dilute solution of hydrochloric acid (20 ml of concentrated hydrochloride acid and 80 ml of water). After the addition of 30 ml of a concentrated solution of sodium hydroxide and extraction with benzene, the benzene solution obtained is washed, dried over anhydrous potassium carbonate and the benzene evaporated in vacuo. The 2-[2-[2-[4-(diphenylmethylene)-1-piperidinyl]ethoxy]ethoxy]-acetamide obtained is used as such for the preparation of the corresponding acid (see Example 3.4).

Provenance & Evidence