Category: 59434-19-4

59434-19-4, 4-Aminophthalide is a benzofuran compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

A mixture of 4-aminoisobenzofuran-1(3H)-one (298 mg, 2 mmol) and 4-(diethoxymethyl)benzaldehyde (1.04 g, 5 mmol) in ethyl propionate (15 mL) was cooled to 0 C. A solution of sodium methoxide in methanol [sodium (184 mg, 8 mmol) in methanol (15 mL)] was then added dropwise. After the addition, the mixture was stirred at 25 C. for 16 hr. The mixture was quenched with water (10 mL) and solvent was removed in vacuum. The residue was dissolved in water, and then extracted with ethyl acetate (50 mL¡Á3). The combined organic layers were washed with brine, dried over anhydrous sodium sulfate, and concentrated to give crude product. The crude product was purified by chromatography (silica gel, petroleum ether/ethyl acetate=100:1 to 10:1) to give methyl 2,3-bis(4(-(diethoxymethyl)phenyl)-4-oxo-1,2,3,4-tetrahydroquinoline-5-carboxylate and ethyl 2,3-bis(4(-(diethoxymethyl)phenyl)-4-oxo-1,2,3,4-tetrahydroquinoline-5-carboxylate (240 mg together, yield 21%) as a light yellow solid. LC-MS (ESI) m/z: 562(M+1)+(methyl 2,3-bis(4(-(diethoxymethyl)phenyl)-4-oxo-1,2,3,4-tetrahydroquinoline-5-carboxylate); 576(M+1)+(ethyl 2,3-bis(4(-(diethoxymethyl)phenyl)-4-oxo-1,2,3,4-tetrahydroquinoline-5-carboxylate)

As the paragraph descriping shows that 59434-19-4 is playing an increasingly important role.

Reference£º
Patent; LEAD THERAPEUTICS, INC.; US2010/35883; (2010); A1;,
Benzofuran – Wikipedia
Benzofuran | C8H6O – PubChem

59434-19-4, 4-Aminophthalide is a benzofuran compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

A mixture of 4-((dimethylamino)methyl)benzaldehyde (539 mg, 3.3 mmol) and 4-aminoisobenzofuran-1(3H)-one (223 mg, 1.5 mmol) in ethyl propionate (14 mL) was cooled to 0 C. A solution of sodium methoxide in methanol [sodium (138 mg, 6 mmol) in methanol (4 mL)] was then added dropwise. After the addition, the mixture was stirred at room temperature for 20 hr. The mixture was quenched with water (10 mL) and solvent was removed in vacuum. The residue was dissolved in water, and then extracted with ethyl acetate (50 mL¡Á3). The combined organic layers were washed with brine, dried over anhydrous sodium sulfate, and concentrated to give crude product. The crude product was purified by chromatography (silica gel, petroleum ether/ethyl acetate=100:1 to 10:1) to give a mixture of methyl 2,3-bis(4-((dimethylamino)methyl)phenyl)-4-oxo-1,2,3,4-tetrahydroquinoline-5-carboxylate and ethyl 2,3-bis(4-((dimethylamino)methyl)phenyl)-4-oxo-1,2,3,4-tetrahydroquinoline-5-carboxylate (165 mg) as a light yellow solid

The synthetic route of 59434-19-4 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; LEAD THERAPEUTICS, INC.; US2010/35883; (2010); A1;,
Benzofuran – Wikipedia
Benzofuran | C8H6O – PubChem

59434-19-4, 4-Aminophthalide is a benzofuran compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

To a stirred mixture of 4-fluorobenzaldehyde (3 g, 20.4 mmol) and anhydrous sodium sulfate (29 g, 20.4 mmol) in anhydrous dichloromethane (200 mL) was added 4-aminoisobenzofuran-1(3H)-one (3.04 g, 24.5 mmol) at 0 C. After the addition, the mixture was stirred at room temperature for 6 days. The mixture was filtered and the cake was washed with dichloromethane (50 mL¡Á3). The filtrate was concentrated to give crude product. The crude product was washed with petroleum ether to give (E)-4-(4-fluorobenzylideneamino)isobenzofuran-1(3H)-one (4.25 g, yield 81%); LC-MS (ESI) m/z: 256 (M+1)+. A mixture of (E)-4-(4-fluorobenzylideneamino)isobenzofuran-1(3H)-one (2.53 g, 10 mmol) and 1-methyl-1H-imidazole-2-carbaldehyde (1.21 g, 11 mmol) in ethyl propionate (50 mL) was cooled to 0 C. Then a solution of sodium ethanoxide in ethanol [sodium (1 g, 44 mmol) in ethanol (30 mL)] was added drop-wise. After the addition, the mixture was stirred at room temperature for 2 hr. The mixture was quenched with water (10 mL) and solvent was removed in vacuum. The residue was dissolved in water, and then extracted with ethyl acetate (100 mL¡Á4). The combined organic layers were washed with brine, dried over anhydrous sodium sulfate, and concentrated to give crude product. The crude product was purified by chromatography (silica gel, petroleum ether/ethyl acetate=10:1 to 1:10) to give ethyl 2-(4-fluorophenyl)-3-(1-methyl-1H-imidazol-2-yl)-4-oxo-1,2,3,4-tetrahydroquinoline-5-carboxylate (210 mg, yield 5%). LC-MS (ESI) m/z: 394 (M+1)+

The synthetic route of 59434-19-4 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; LEAD THERAPEUTICS, INC.; US2010/35883; (2010); A1;,
Benzofuran – Wikipedia
Benzofuran | C8H6O – PubChem