反应详情

温度

75 °C

A solution of 1,2,3,4-tetrahydro-2-methyl-4-isoquinolinol (3.3 g, 0.020 mole) in dry DMF is added dropwise under nitrogen to a suspension of sodium hydride 50% (98%) (1.6 g, 0.033 mole), previously washed with hexane, in 40 ml dry DMF, at 65° C. After the evolution of gas ceases, a solution of p-chlorofluorobenzene (3.6 g, 0.028 mole) in 15 ml dry DMF is added slowly, and the resulting mixture is allowed to stir at 75° C. for 16 hours. After cooling to room temperature the solution is poured into water (110 ml), extracted with chloroform, the chloroform phase is washed twice with water, dried (saturated NaCl, anhydrous MgSO4) and removed via reduced pressure to yield an oil which is purified by dry column chromatography, over silica gel using ethyl acetate as the eluent. The desired product is crystallized from ether as the hydrochloride salt, yielding 1.9 g (31%) of a solid of 4-(p-chlorophenoxy)-2-methyl-1,2,3,4-tetrahydroisoquinoline hydrochloride, d@92° C.

1. washpreviously washed with hexane, in 40 ml dry DMF, at 65° C
2. temperatureAfter cooling to room temperature the solution
3. extractionextracted with chloroform
4. washthe chloroform phase is washed twice with water
5. dry with materialdried (saturated NaCl, anhydrous MgSO4)
6. customremoved via reduced pressure
7. customto yield an oil which
8. customis purified
9. customby dry column chromatography
10. customThe desired product is crystallized from ether as the hydrochloride salt