methyl benzofuran-6-carboxylate
benzofuran-6-carboxylic acid
Conditions | Yield |
---|---|
With lithium hydroxide; water In tetrahydrofuran at 20℃; for 1h; | 100% |
Stage #1: methyl benzofuran-6-carboxylate With lithium hydroxide In methanol; water at 20℃; Stage #2: With hydrogenchloride In water | 97% |
With water; lithium hydroxide In methanol | 97% |
ethyl benzofuran-6-carboxylate
benzofuran-6-carboxylic acid
Conditions | Yield |
---|---|
With sodium hydroxide In tetrahydrofuran; methanol | 97% |
methyl 3-hydroxy-4-[(trimethylsilyl)ethynyl]benzoate
methanol
benzofuran-6-carboxylic acid
Conditions | Yield |
---|---|
Stage #1: methyl 3-hydroxy-4-[(trimethylsilyl)ethynyl]benzoate With copper(l) iodide; triethylamine In ethanol at 75℃; for 3h; Stage #2: methanol With pyrographite In ethanol for 1h; Heating / reflux; Stage #3: With sodium hydroxide In ethanol at 20℃; | 93% |
benzofuran-6-carboxylic acid
Conditions | Yield |
---|---|
With copper(l) iodide; triethylamine In ethanol at 75 - 85℃; for 3h; | 92% |
benzo[b]furan-6-carbonitrile
benzofuran-6-carboxylic acid
Conditions | Yield |
---|---|
With water; sodium hydroxide at 90℃; | 85% |
benzofuran-6-carboxaldehyde
benzofuran-6-carboxylic acid
Conditions | Yield |
---|---|
With dihydrogen peroxide; sodium hydroxide In water at 75 - 90℃; | 70% |
Conditions | Yield |
---|---|
Stage #1: 6-bromo-benzofuran With magnesium; ethylene dibromide In tetrahydrofuran at 70℃; for 2h; Stage #2: carbon dioxide In tetrahydrofuran at -40℃; | 24% |
methyl 3-hydroxy-4-[(trimethylsilyl)ethynyl]benzoate
benzofuran-6-carboxylic acid
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1.1: CuI; Et3N / ethanol / 3 h / 75 °C 1.2: DARCO / ethanol; methanol / 1 h / Heating 2.1: aq. NaOH / 20 °C View Scheme |
methyl 3-hydroxy-4-iodobenzoate
benzofuran-6-carboxylic acid
Conditions | Yield |
---|---|
Multi-step reaction with 3 steps 1.1: 91 percent / Pd(PPh3)2Cl2; CuI; Et3N / tetrahydrofuran; CHCl3 / 4 h / 50 °C 2.1: CuI; Et3N / ethanol / 3 h / 75 °C 2.2: DARCO / ethanol; methanol / 1 h / Heating 3.1: aq. NaOH / 20 °C View Scheme |
3-hydroxy-4-(2-propenyl)benzoic acid
benzofuran-6-carboxylic acid
Conditions | Yield |
---|---|
Multi-step reaction with 5 steps 1: SOCl2, DMF / 3 h 2: 0.5 h 3: 1.) O3, 2.) (CH3)2S / 1.) MeOH, -70 deg C, 15 min, 2.) MeOH, RT, overnight 4: 85percent H3PO4 / 100 °C 5: 87 percent / 35percent aq. KOH / methanol / 100 °C View Scheme |
methyl 3-(prop-2-enyloxy)benzoate
benzofuran-6-carboxylic acid
Conditions | Yield |
---|---|
Multi-step reaction with 6 steps 1: 27 percent / 1 h / 230 °C 2: SOCl2, DMF / 3 h 3: 0.5 h 4: 1.) O3, 2.) (CH3)2S / 1.) MeOH, -70 deg C, 15 min, 2.) MeOH, RT, overnight 5: 85percent H3PO4 / 100 °C 6: 87 percent / 35percent aq. KOH / methanol / 100 °C View Scheme |
methyl 3-hydroxy-4-(2-propenyl)benzoate
benzofuran-6-carboxylic acid
Conditions | Yield |
---|---|
Multi-step reaction with 3 steps 1: 1.) O3, 2.) (CH3)2S / 1.) MeOH, -70 deg C, 15 min, 2.) MeOH, RT, overnight 2: 85percent H3PO4 / 100 °C 3: 87 percent / 35percent aq. KOH / methanol / 100 °C View Scheme |
benzofuran-6-carboxylic acid
Conditions | Yield |
---|---|
Multi-step reaction with 4 steps 1: 0.5 h 2: 1.) O3, 2.) (CH3)2S / 1.) MeOH, -70 deg C, 15 min, 2.) MeOH, RT, overnight 3: 85percent H3PO4 / 100 °C 4: 87 percent / 35percent aq. KOH / methanol / 100 °C View Scheme |
methyl 2-hydroxy-2,3-dihydrobenzofuran-6-carboxylate
benzofuran-6-carboxylic acid
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1: 85percent H3PO4 / 100 °C 2: 87 percent / 35percent aq. KOH / methanol / 100 °C View Scheme |
methyl 4-formyl-3-hydroxybenzoate
benzofuran-6-carboxylic acid
methyl 3-hydroxy-4-[(trimethylsilyl)ethynyl]benzoate
A
benzofuran-6-carboxylic acid
B
N-[(1S,2R,4R)-7-Azabicyclo[2.2.1]hept-2-yl]-1-benzofuran-6-carboxamide hydrochloride
Conditions | Yield |
---|---|
With sodium hydroxide; copper(I) iodide In methanol; ethanol; water; triethylamine | A n/a B 1.83 g (93%) |
6-hydroxybenzofuran
benzofuran-6-carboxylic acid
Conditions | Yield |
---|---|
Multi-step reaction with 3 steps 1: dichloromethane / 72 h / 20 °C 2: 1,3-bis-(diphenylphosphino)propane; palladium diacetate / N,N-dimethyl-formamide / 6 h / 70 °C / 6000.6 Torr 3: lithium hydroxide / methanol; water / 20 °C View Scheme | |
Multi-step reaction with 3 steps 1: dichloromethane / 72 h 2: 1,3-bis-(diphenylphosphino)propane; palladium diacetate; triethylamine / N,N-dimethyl-formamide / 6 h / 70 °C / 6000.6 Torr / Autoclave 3: lithium hydroxide; water / methanol View Scheme |
6-hydroxybenzofuran-3-one
benzofuran-6-carboxylic acid
Conditions | Yield |
---|---|
Multi-step reaction with 5 steps 1.1: triethylamine / acetone / 20 °C 2.1: sodium tetrahydroborate / methanol / 20 °C 2.2: 2 h / 20 °C 2.3: 20 °C / Darkness; Inert atmosphere 3.1: dichloromethane / 72 h / 20 °C 4.1: 1,3-bis-(diphenylphosphino)propane; palladium diacetate / N,N-dimethyl-formamide / 6 h / 70 °C / 6000.6 Torr 5.1: lithium hydroxide / methanol; water / 20 °C View Scheme | |
Multi-step reaction with 6 steps 1: triethylamine / acetone 2: sodium tetrahydroborate / methanol / 20 °C 3: hydrogenchloride; water / tetrahydrofuran / 28 °C / Inert atmosphere; Darkness 4: dichloromethane / 72 h 5: 1,3-bis-(diphenylphosphino)propane; palladium diacetate; triethylamine / N,N-dimethyl-formamide / 6 h / 70 °C / 6000.6 Torr / Autoclave 6: lithium hydroxide; water / methanol View Scheme |
trifluoromethanesulfonic acid benzofuran-6-yl ester
benzofuran-6-carboxylic acid
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1: 1,3-bis-(diphenylphosphino)propane; palladium diacetate / N,N-dimethyl-formamide / 6 h / 70 °C / 6000.6 Torr 2: lithium hydroxide / methanol; water / 20 °C View Scheme | |
Multi-step reaction with 2 steps 1: 1,3-bis-(diphenylphosphino)propane; palladium diacetate; triethylamine / N,N-dimethyl-formamide / 6 h / 70 °C / 6000.6 Torr / Autoclave 2: lithium hydroxide; water / methanol View Scheme |
6-(tert-butyl-dimethylsilanyloxy)-[2H]-benzofuran-3-one
benzofuran-6-carboxylic acid
Conditions | Yield |
---|---|
Multi-step reaction with 4 steps 1.1: sodium tetrahydroborate / methanol / 20 °C 1.2: 2 h / 20 °C 1.3: 20 °C / Darkness; Inert atmosphere 2.1: dichloromethane / 72 h / 20 °C 3.1: 1,3-bis-(diphenylphosphino)propane; palladium diacetate / N,N-dimethyl-formamide / 6 h / 70 °C / 6000.6 Torr 4.1: lithium hydroxide / methanol; water / 20 °C View Scheme | |
Multi-step reaction with 5 steps 1: sodium tetrahydroborate / methanol / 20 °C 2: hydrogenchloride; water / tetrahydrofuran / 28 °C / Inert atmosphere; Darkness 3: dichloromethane / 72 h 4: 1,3-bis-(diphenylphosphino)propane; palladium diacetate; triethylamine / N,N-dimethyl-formamide / 6 h / 70 °C / 6000.6 Torr / Autoclave 5: lithium hydroxide; water / methanol View Scheme |
benzofuran-6-carboxylic acid
Conditions | Yield |
---|---|
Multi-step reaction with 4 steps 1: hydrogenchloride; water / tetrahydrofuran / 28 °C / Inert atmosphere; Darkness 2: dichloromethane / 72 h 3: 1,3-bis-(diphenylphosphino)propane; palladium diacetate; triethylamine / N,N-dimethyl-formamide / 6 h / 70 °C / 6000.6 Torr / Autoclave 4: lithium hydroxide; water / methanol View Scheme |
6-bromo-benzofuran
benzofuran-6-carboxylic acid
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1.1: isopropylmagnesium bromide / tetrahydrofuran / 0.5 h / -25 °C 1.2: -25 °C 2.1: sodium hydroxide; dihydrogen peroxide / water / 75 - 90 °C View Scheme | |
Multi-step reaction with 2 steps 1: tetrahydrofuran / Reflux 2: sodium hydroxide; water / 90 °C View Scheme |
3-Carboxyphenol
benzofuran-6-carboxylic acid
Conditions | Yield |
---|---|
Multi-step reaction with 4 steps 1: methanesulfonic acid / 3 h / 80 °C / Large scale 2: thionyl chloride / 3 h / 60 °C / Large scale 3: potassium tert-butylate / tetrahydrofuran / 1 h / 0 - 5 °C / Inert atmosphere; Large scale 4: sodium hydroxide / methanol; water / 1 h / 20 - 35 °C / Large scale View Scheme | |
Multi-step reaction with 3 steps 1: sodium hydroxide; sodium hypochlorite / methanol / 72 h / 0 - 30 °C 2: bis-triphenylphosphine-palladium(II) chloride; copper(l) iodide; triethylamine / tetrahydrofuran; chloroform / 4 h / 50 - 60 °C / Inert atmosphere 3: copper(l) iodide; triethylamine / ethanol / 3 h / 75 - 85 °C View Scheme |
4-formyl-3-hydroxybenzoic acid
benzofuran-6-carboxylic acid
Conditions | Yield |
---|---|
Multi-step reaction with 3 steps 1: thionyl chloride / 3 h / 60 °C / Large scale 2: potassium tert-butylate / tetrahydrofuran / 1 h / 0 - 5 °C / Inert atmosphere; Large scale 3: sodium hydroxide / methanol; water / 1 h / 20 - 35 °C / Large scale View Scheme |
3-hydroxy-4-iodobenzoic acid
benzofuran-6-carboxylic acid
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1: bis-triphenylphosphine-palladium(II) chloride; copper(l) iodide; triethylamine / tetrahydrofuran; chloroform / 4 h / 50 - 60 °C / Inert atmosphere 2: copper(l) iodide; triethylamine / ethanol / 3 h / 75 - 85 °C View Scheme |
benzofuran-6-carboxylic acid
Conditions | Yield |
---|---|
With thionyl chloride; N,N-dimethyl-formamide In toluene Inert atmosphere; Heating; | 100% |
With thionyl chloride In benzene for 3h; Heating; | |
With methanesulfonyl chloride; triethylamine |
benzofuran-6-carboxylic acid
Conditions | Yield |
---|---|
Stage #1: benzofuran-6-carboxylic acid With N-ethyl-N,N-diisopropylamine; HATU In tetrahydrofuran at 20 - 30℃; for 2h; Inert atmosphere; Stage #2: C10H9Cl2NO2*C2HF3O2 In tetrahydrofuran at 20 - 30℃; | 98% |
methanol
benzofuran-6-carboxylic acid
methyl benzofuran-6-carboxylate
Conditions | Yield |
---|---|
With sulfuric acid at 20℃; | 96% |
benzofuran-6-carboxylic acid
Conditions | Yield |
---|---|
Stage #1: benzofuran-6-carboxylic acid With N-ethyl-N,N-diisopropylamine; N-[(dimethylamino)-3-oxo-1H-1,2,3-triazolo[4,5-b]pyridin-1-yl-methylene]-N-methylmethanaminium hexafluorophosphate In N,N-dimethyl-formamide at 20℃; for 1h; Stage #2: (S)-2-(8-chloro-2,3-dihydro-1H-pyrrole[3,2,1-ij]isoquinazolin-7-carbonylamino)-3-(3-(methanesulfonyl)phenyl)propanoic acid benzyl ester trifluoroacetate salt In N,N-dimethyl-formamide at 20℃; for 12h; | 95% |
benzofuran-6-carboxylic acid
dichloro quinoline ester
C20H15Cl2NO4
Conditions | Yield |
---|---|
With 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride; triethylamine; dmap In DMF (N,N-dimethyl-formamide) at 20℃; for 15h; | 92% |
Stage #1: benzofuran-6-carboxylic acid With O-(1H-benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium hexafluorophosphate; triethylamine In tetrahydrofuran at 25 - 35℃; for 0.5h; Stage #2: dichloro quinoline ester In tetrahydrofuran at 25 - 35℃; for 3h; |
benzofuran-6-carboxylic acid
4-(4-methoxybenzyl)-6-piperidin-4-ylpyrimidin-2-amine
4-[1-(1-benzofuran-6-ylcarbonyl)piperidin-4-yl]-6-(4-methoxybenzyl)pyrimidin-2-amine
Conditions | Yield |
---|---|
With benzotriazol-1-ol; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride In chloroform at 20℃; | 88% |
benzofuran-6-carboxylic acid
Conditions | Yield |
---|---|
Stage #1: benzofuran-6-carboxylic acid With N-ethyl-N,N-diisopropylamine; N-[(dimethylamino)-3-oxo-1H-1,2,3-triazolo[4,5-b]pyridin-1-yl-methylene]-N-methylmethanaminium hexafluorophosphate In dichloromethane at 0℃; for 3h; Inert atmosphere; Stage #2: 5,7-dichloro-1,2,3,4-tetrahydroisoquinoline-6-carboxylic acid In dichloromethane at 30℃; for 8h; Reagent/catalyst; Temperature; Solvent; | 87.01% |
benzofuran-6-carboxylic acid
(S)-2-(5,7-dichloro-1,2,3,4-tetrahydroisoquinoline-6-carboxamido)-3-(3-(methylsulfonyl)phenyl)propanoic acid
(S)-2-(2-(benzofuran-6-carbonyl)-5,7-dichloro-1,2,3,4-tetrahydroisoquinoline-6-carboxamido)-3-(3-(methylsulfonyl)phenyl)propanoic acid
Conditions | Yield |
---|---|
With benzotriazol-1-ol; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride; N-ethyl-N,N-diisopropylamine In tetrahydrofuran at -10 - 20℃; Reagent/catalyst; Solvent; Temperature; | 83.8% |
With triethylamine; N-[(dimethylamino)-3-oxo-1H-1,2,3-triazolo[4,5-b]pyridin-1-yl-methylene]-N-methylmethanaminium hexafluorophosphate In N,N-dimethyl-formamide at 10 - 20℃; for 1.5h; |
Conditions | Yield |
---|---|
Stage #1: benzofuran-6-carboxylic acid; (S)-2-(5-(7-dichloro-1,2,3,4-tetrahydroisoquinolin-6-carboxamido)-3-(3-(methylsulfonyl)phenyl)propanoic acid) hydrochloride In dichloromethane; dimethyl sulfoxide at 0 - 5℃; for 2h; Stage #2: N-cyclohexyl-cyclohexanamine In water at 0 - 25℃; for 41h; pH=8.3; Temperature; | 65% |
benzofuran-6-carboxylic acid
6a-naltrexamine hydrochloride
Conditions | Yield |
---|---|
Stage #1: benzofuran-6-carboxylic acid With benzotriazol-1-ol; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride; triethylamine In N,N-dimethyl-formamide for 1h; Molecular sieve; Cooling with ice; Inert atmosphere; Stage #2: 6a-naltrexamine hydrochloride In N,N-dimethyl-formamide at 20℃; Inert atmosphere; Stage #3: With potassium carbonate In methanol at 20℃; Inert atmosphere; | 62% |
Conditions | Yield |
---|---|
With dmap; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride In N,N-dimethyl-formamide at 23℃; for 12h; Inert atmosphere; | 54% |
Conditions | Yield |
---|---|
Stage #1: benzofuran-6-carboxylic acid With N-ethyl-N,N-diisopropylamine; HATU In DMF (N,N-dimethyl-formamide) at 20℃; for 0.5h; Stage #2: C19H19Cl2N3O4S In DMF (N,N-dimethyl-formamide) at 45℃; for 12h; | 50% |
With O-(1H-benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium hexafluorophosphate; N-ethyl-N,N-diisopropylamine In N,N-dimethyl-formamide at 45℃; |
benzofuran-6-carboxylic acid
6β-naltrexamine
Conditions | Yield |
---|---|
Stage #1: benzofuran-6-carboxylic acid With benzotriazol-1-ol; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride; triethylamine In N,N-dimethyl-formamide for 1h; Molecular sieve; Cooling with ice; Inert atmosphere; Stage #2: 6β-naltrexamine In N,N-dimethyl-formamide at 20℃; Inert atmosphere; Stage #3: With potassium carbonate In methanol at 20℃; Inert atmosphere; | 44% |
benzofuran-6-carboxylic acid
(3R)-quinuclidin-3-amine dihydrochloride
Conditions | Yield |
---|---|
With N-ethyl-N,N-diisopropylamine; HATU In N,N-dimethyl-formamide at 20℃; for 18h; | |
With N-ethyl-N,N-diisopropylamine; HATU In DMF (N,N-dimethyl-formamide) at 0℃; for 18h; |
benzofuran-6-carboxylic acid
Conditions | Yield |
---|---|
Multi-step reaction with 3 steps 1: thionyl chloride / benzene / 3 h / Heating 2: CH2Cl2 / 3 h / Ambient temperature 3: thionyl chloride / 12 h / Ambient temperature View Scheme |
benzofuran-6-carboxylic acid
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1: thionyl chloride / benzene / 3 h / Heating 2: CH2Cl2 / 3 h / Ambient temperature View Scheme |
The 6-Benzofurancarboxylicacid is an organic compound with the formula C9H6O3. The systematic name of this chemical is 1-benzofuran-6-carboxylic acid. With the CAS registry number 77095-51-3, it is also named as Benzofuran-6-carboxylic acid.
Physical properties about 6-Benzofurancarboxylicacid are: (1)ACD/LogP: 1.24; (2)ACD/LogD (pH 5.5): 1; (3)ACD/BCF (pH 5.5): 1; (4)ACD/BCF (pH 7.4): 1; (5)ACD/KOC (pH 5.5): 15; (6)ACD/KOC (pH 7.4): 1; (7)#H bond acceptors: 3; (8)#H bond donors: 1; (9)#Freely Rotating Bonds: 1; (10)Polar Surface Area: 50.44 Å2; (11)Index of Refraction: 1.649; (12)Molar Refractivity: 43.325 cm3; (13)Molar Volume: 118.873 cm3; (14)Polarizability: 17.175×10-24cm3; (15)Surface Tension: 57.41 dyne/cm; (16)Density: 1.364 g/cm3; (17)Flash Point: 150.693 °C; (18)Enthalpy of Vaporization: 59.927 kJ/mol; (19)Boiling Point: 325.559 °C at 760 mmHg.
You can still convert the following datas into molecular structure:
(1)SMILES: OC(=O)c1ccc2ccoc2c1
(2)InChI: InChI=1/C9H6O3/c10-9(11)7-2-1-6-3-4-12-8(6)5-7/h1-5H,(H,10,11)
(3)InChIKey: RVDHGRQELZPGCO-UHFFFAOYAF
(4)Std. InChI: InChI=1S/C9H6O3/c10-9(11)7-2-1-6-3-4-12-8(6)5-7/h1-5H,(H,10,11)
(5)Std. InChIKey: RVDHGRQELZPGCO-UHFFFAOYSA-N
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