反应详情

The amine prepared from 1.5 g. of 3',4'-dihydrospiro[cyclohexane-1,2'(1'H)-naphthalen]-4-ylamine hydrochloride [I(c)] (prepared as in Example 10C), 1.9 g. of 1,5-diiodopentane and 1.6 g. of potassium carbonate in 18 ml. of ethanol is stirred at reflux temperature for about 18 hours. The mixture after cooling is diluted with water, the solid collected on a filter and recrystallized from methanol to give 1-[3',4'-dihydrospiro[cyclohexane-1,2'(1'H)-naphthalen]-4-yl]piperidine [I(c)].

1. temperatureat reflux temperature for about 18 hours
2. temperatureThe mixture after cooling
3. customthe solid collected on
4. filtrationa filter
5. customrecrystallized from methanol