Thionyl Chloride → N-{4-[(6,7-Dimethoxy-4-quinolyl)oxy]phenyl}-N'-[4-(morpholinomethyl)benzoyl]thiourea

Temperature

100 °C

Commercially available 4-bromomethylbenzoic acid (300 mg) was dissolved in acetonitrile (10 ml). Potassium carbonate (30 mg) and morpholine (130 μl) were added to the solution, and the mixture was stirred at room temperature for one hr. The reaction layer was subjected to separation with chloroform and a saturated aqueous sodium hydrogencarbonate solution. The organic layer was then concentrated to give methyl 4-(morpholinomethyl)benzoate. Methanol (1 ml), water (150 μl), and potassium hydroxide (15 mg) were added to the residue, and the mixture was heated at 60° C. for one hr. After the completion of the reaction, the solvent was removed by distillation to give 4-(morpholinomethyl)benzoic acid. Toluene (20 ml) and thionyl chloride (1 ml) were added to the residule, and the mixture was heated at 100° C. for one hr. The solvent was removed by distillation, and 4-(morpholinomethyl)-1-benzenecarbonyl isothiocyanate was prepared using the resultant 4-(morpholinomethyl)-1-benzenecarbonyl chloride as a starting compound according to the description of the literature. 4-[(6,7-Dimethoxy-4-quinolyl)oxy]aniline (50 mg) was dissolved in toluene (5 ml) and ethanol (1 ml) to prepare a solution. A solution of 4-(morpholinomethyl)-1-benzenecarbonyl isothiocyanate in ethanol (1 ml) was then added to the solution, and the mixture was stirred at room temperature for 2 hr. The reaction solution was concentrated, and the residue was purified by chromatography on silica gel using chloroform/acetone for development to give the title compound (74 mg, yield 78%).

1. customThe solvent was removed by distillation, and 4-(morpholinomethyl)-1-benzenecarbonyl isothiocyanate
2. customwas prepared
3. concentrationThe reaction solution was concentrated
4. customthe residue was purified by chromatography on silica gel

ORD record

ord-ab4aa044499a4e59900bf455812a04e1

Source dataset

uspto-grants-2006_11

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US07135466B2