反应详情

To a solution of p-chlorobenzylmagnesium chloride in ethyl ether (prepared from 16 parts of p-chlorobenzyl chloride and 3 parts of magnesium turnings in 100 parts of ethyl ether) is added dropwise a solution of 19 parts of N-benzyl-4-piperidone in 50 parts of ethyl ether, the reaction vessel being cooled in an ice bath during the addition. When the addition is complete, mixture is refluxed for 2 hours, cooled, and the Grignard decomposed with saturated ammonium chloride solution. Evaporation of the ethyl ether gives N-benzyl-4-p-chlorobenzyl-4-hydroxypiperidine. ##STR13##

1. temperaturethe reaction vessel being cooled in an ice bath during the addition
2. additionWhen the addition
3. temperaturemixture is refluxed for 2 hours
4. temperaturecooled
5. customEvaporation of the ethyl ether