methyl 2-[2-(dimethylamino)ethoxy]benzoate

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: 4.4 g of methyl 2-[2-(N,N-dimethylamino)ethyl]oxy-benzoate are heated in the microwave for 15 minutes at 300 W with 30 ml of 5N hydrochloric acid. The mixture is extracted with ethyl acetate, the aqueous phase is concentrated by evaporation and recrystallised from acetonitrile/ether. Yield: 4.2 g (86% of theory). The mixture is extracted with ethyl acetate the aqueous phase is concentrated by evaporation recrystallised from acetonitrile/ether

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: 4.4 g of methyl 2-[2-(N,N-dimethylamino)ethyl]oxy-benzoate are heated in the microwave for 15 minutes at 300 W with 30 ml of 5N hydrochloric acid. The mixture is extracted with ethyl acetate, the aqueous phase is concentrated by evaporation and recrystallised from acetonitrile/ether. Yield: 4.2 g (86% of theory). The mixture is extracted with ethyl acetate the aqueous phase is concentrated by evaporation recrystallised from acetonitrile/ether

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: 15.2 g of methyl salicylate are dissolved in 200 ml of anhydrous acetonitrile and stirred with 4.4 g of 60% sodium hydride suspension in oil at ambient temperature for 60 minutes. To this solution is added 200 ml of absolute acetonitrile, then it is mixed with 17.4 g of 2-(N,N-dimethylamino)ethylchloride hydrochloride and 5.2 g of 60% sodium hydride suspension in oil. This solution is also stirred for 60 minutes at ambient temperature. The combined solutions are refluxed for 1 hour and then evaporated down in vacuo. The residue is mixed with water and extracted with ethyl acetate. The organic phase is dried over sodium sulphate, the solvent is distilled off in vacuo and the residue is chromatographed on silica gel with ethyl acetate/methanol (1:1). In this way, 14.6 g of a yellow oil are obtained (65% of theory). The combined solutions are refluxed for 1 hour evaporated down in vacuo The residue is mixed with water extracted with ethyl acetate The organic phase is dried over sodium sulphate the solvent is distilled off in vacuo the residue is chromatographed on silica gel with ethyl acetate/methanol (1:1)

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: 4.4 g of methyl 2-[2-(N,N-dimethylamino)ethyl]oxy-benzoate are heated in the microwave for 15 minutes at 300 W with 30 ml of 5N hydrochloric acid. The mixture is extracted with ethyl acetate, the aqueous phase is concentrated by evaporation and recrystallised from acetonitrile/ether. Yield: 4.2 g (86% of theory). The mixture is extracted with ethyl acetate the aqueous phase is concentrated by evaporation recrystallised from acetonitrile/ether

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: 15.2 g of methyl salicylate are dissolved in 200 ml of anhydrous acetonitrile and stirred with 4.4 g of 60% sodium hydride suspension in oil at ambient temperature for 60 minutes. To this solution is added 200 ml of absolute acetonitrile, then it is mixed with 17.4 g of 2-(N,N-dimethylamino)ethylchloride hydrochloride and 5.2 g of 60% sodium hydride suspension in oil. This solution is also stirred for 60 minutes at ambient temperature. The combined solutions are refluxed for 1 hour and then evaporated down in vacuo. The residue is mixed with water and extracted with ethyl acetate. The organic phase is dried over sodium sulphate, the solvent is distilled off in vacuo and the residue is chromatographed on silica gel with ethyl acetate/methanol (1:1). In this way, 14.6 g of a yellow oil are obtained (65% of theory). The combined solutions are refluxed for 1 hour evaporated down in vacuo The residue is mixed with water extracted with ethyl acetate The organic phase is dried over sodium sulphate the solvent is distilled off in vacuo the residue is chromatographed on silica gel with ethyl acetate/methanol (1:1)