反应详情

430 μl (5 mmol) of isopropylamine and 420 mg (3 mmol) of potassium carbonate are added to a solution of 600 mg (1 mmol) of ethyl 4′-(3-iodopropoxy)-3′-(5,5,8,8-tetramethyl-5,6,7,8-tetrahydronaphth-2-yl)biphenyl-4-carboxylate in 50 ml of acetonitrile. The reaction mixture is stirred at reflux overnight. The reaction is stopped by adding water and is then extracted with ethyl acetate. The organic phases are combined and dried over sodium sulfate. The solvents are evaporated off and the residue is then purified by chromatography on silica gel (50/50 heptane/ethyl acetate). 160 mg of ethyl 4′-(3-isopropylaminopropoxy)-3′-(5,5,8,8-tetramethyl-5,6,7,8-tetrahydronaphth-2-yl)biphenyl-4-carboxylate are obtained in the form of a yellowish solid (m.p.=171° C., yield=30%).

1. temperatureat reflux overnight
2. extractionis then extracted with ethyl acetate
3. dry with materialdried over sodium sulfate
4. customThe solvents are evaporated off
5. customthe residue is then purified by chromatography on silica gel (50/50 heptane/ethyl acetate)