sodium hydroxide; tetrabutyl-ammonium chloride in dichloromethane 0.333333 h; Ambient temperatureultrasound sonication;

aluminium trichloride in dichloromethane Ambient temperature;

sodium hydroxide; N-hexadecyl-N,N,N-trimethylammonium bromide in benzene 5 h;

1: 69 percent / triethylbenzylammonmium chloride / CH2Cl2; H2O / 0.33 h / Irradiation; ultrasound sonication 2: 60 percent / 50percent aq. NaOH / tetrabutylammonium chloride / CH2Cl2 / 0.33 h / Ambient temperature; ultrasound sonication View Scheme

1: 69 percent / triethylbenzylammonmium chloride / CH2Cl2; H2O / 0.33 h / Irradiation; ultrasound sonication 2: 60 percent / 50percent aq. NaOH / tetrabutylammonium chloride / CH2Cl2 / 0.33 h / Ambient temperature; ultrasound sonication View Scheme

potassium hydroxide in ethanol; water 6 h; Heating;

sodium hydroxide; quaternary cinchona alkaloid in dichloromethane T=20°C; 9 h; Title compound not separated from byproducts.;