4-Chloro-pyridine-2-carboxylic acid methyl ester
4-chloropicolinic acid
Conditions | Yield |
---|---|
With sodium hydroxide at 20℃; for 1h; | 87% |
Stage #1: 4-Chloro-pyridine-2-carboxylic acid methyl ester With methanol; sodium hydroxide; water at 20℃; for 0.25h; Stage #2: With hydrogenchloride; water pH=2; | |
Stage #1: 4-Chloro-pyridine-2-carboxylic acid methyl ester With methanol; sodium hydroxide; water at 0 - 20℃; for 0.25h; Stage #2: With hydrogenchloride; water pH=2; |
4-chloro-pyridine-2-carbonitrile
4-chloropicolinic acid
Conditions | Yield |
---|---|
With sodium carbonate; sodium sulfite In ice-water; sulfuric acid; water | 54.9% |
Conditions | Yield |
---|---|
Stage #1: 2-Picolinic acid With thionyl chloride; sodium bromide for 20h; Heating / reflux; Stage #2: With water at -2 - 2℃; | 28% |
Multi-step reaction with 2 steps 1: 1) SOCl2, DMF / 1) 40-45 deg C, 45 min; 45->72 deg C, 2 h; 72 deg C, 21 h, 2) toluene, room temperature, 1 h 2: 1) 57percent HI, aq. hypophosphorous acid, 2) aq. NaOH / 1) 107 deg C, 6 h, 2) 95 deg C, 30 min; room temperature, 1 h View Scheme | |
With thionyl chloride In N,N-dimethyl-formamide at 95℃; for 12h; |
Conditions | Yield |
---|---|
With potassium permanganate |
4-chloro-pyridine-2-carbonyl chloride
4-chloropicolinic acid
Conditions | Yield |
---|---|
With water | |
With water |
Conditions | Yield |
---|---|
With potassium permanganate; sulfuric acid; water |
Conditions | Yield |
---|---|
With thionyl chloride; sulfur dioxide Behandeln des Reaktionsprodukts mit H2O; | |
With thionyl chloride In water at 0℃; Reflux; |
A
4-chloropicolinic acid
Conditions | Yield |
---|---|
With sodium hydroxide; hydrogen iodide; hypophosphorous acid 1) 107 deg C, 6 h, 2) 95 deg C, 30 min; room temperature, 1 h; Yield given. Multistep reaction. Yields of byproduct given. Title compound not separated from byproducts; |
2-Picolinic acid
thionyl chloride
A
4-chloropicolinic acid
B
4,6-dichloro-2-pyridinecarboxylic acid
C
4,5,6-trichloropicolinic acid
Conditions | Yield |
---|---|
Irradiation; |
Conditions | Yield |
---|---|
With phosphorus pentachloride at 250 - 270℃; im Rohr; Behandeln des Reaktionsprodukts mit Schwefelsaeure; |
4-chloro-aniline
A
4-chloropicolinic acid
B
4-chlorobenzonitrile
C
bis-(4-chloro-phenyl)-diazene
Conditions | Yield |
---|---|
With phosphate buffer; ozone In water for 0.416667h; pH=8; Formation of xenobiotics; Title compound not separated from byproducts; |
Conditions | Yield |
---|---|
Multi-step reaction with 4 steps 1: aqueous H2O2; acetic acid 2: fuming H2SO4; aqueous HNO3 3: PCl3 / 60 °C 4: H2O; KMnO4; H2SO4 View Scheme |
Conditions | Yield |
---|---|
Multi-step reaction with 3 steps 1: fuming H2SO4; aqueous HNO3 2: PCl3 / 60 °C 3: H2O; KMnO4; H2SO4 View Scheme |
4,4'-dinitro-2,2'-bipyridyl-N,N'-dioxide
4-chloropicolinic acid
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1: PCl3 / 60 °C 2: H2O; KMnO4; H2SO4 View Scheme |
4-chloro-2-pyridinecarbaldehyde
4-chloropicolinic acid
Conditions | Yield |
---|---|
With potassium permanganate In water; acetonitrile |
4-hydroxypyridine-2-carboxylic acid
4-chloropicolinic acid
Conditions | Yield |
---|---|
With thionyl chloride In N,N-dimethyl-formamide at 120℃; for 6h; |
Conditions | Yield |
---|---|
In water at 150℃; for 2h; Sealed tube; | 99% |
In water at 100℃; for 5h; Sealed tube; | 95% |
In water for 2h; Sealed tube; Heating; | 90% |
4-chloropicolinic acid
4-chloropicolinamide
Conditions | Yield |
---|---|
Stage #1: 4-chloropicolinic acid In thionyl chloride at 80℃; for 2h; Stage #2: With ammonia In methanol; thionyl chloride at 0 - 20℃; for 3.25h; | 96% |
Stage #1: 4-chloropicolinic acid With thionyl chloride at 80℃; for 2h; Stage #2: With ammonia In methanol at 0 - 20℃; for 3.25h; | 96% |
Stage #1: 4-chloropicolinic acid With thionyl chloride In toluene at 80℃; for 6h; Stage #2: With ammonium hydroxide In toluene at 20℃; for 1h; Cooling with ice; | 94% |
4-chloropicolinic acid
diazomethyl-trimethyl-silane
4-Chloro-pyridine-2-carboxylic acid methyl ester
Conditions | Yield |
---|---|
Stage #1: 4-chloropicolinic acid; diazomethyl-trimethyl-silane With methanol In tetrahydrofuran at 0 - 20℃; Stage #2: With acetic acid In tetrahydrofuran; methanol; water | 96% |
4-chloropicolinic acid
N,O-dimethylhydroxylamine*hydrochloride
4-chloropyridine-2-carboxylic acid N-methoxy-N-methylamide
Conditions | Yield |
---|---|
Stage #1: N,O-dimethylhydroxylamine*hydrochloride With N-ethyl-N,N-diisopropylamine In N,N-dimethyl-formamide at 0℃; for 0.166667h; Stage #2: 4-chloropicolinic acid With 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 16h; | 96% |
With 4-methyl-morpholine; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride In dichloromethane at 0 - 20℃; | 46% |
4-chloropicolinic acid
benzyl alcohol
benzyl 4-chloropyridin-2-ylcarbamate
Conditions | Yield |
---|---|
With trimethylsilylazide; 2,4,6-tripropyl-1,3,5,2,4,6-trioxatriphosphinane-2,4,6-trioxide; triethylamine In tetrahydrofuran Curtius rearrangement; Reflux; | 94% |
Conditions | Yield |
---|---|
sulfuric acid for 48h; Heating / reflux; | 93% |
Stage #1: 4-chloropicolinic acid; ethanol With sulfuric acid for 48h; Reflux; Stage #2: With sodium hydroxide In ethanol pH=8 - 9; | 93% |
With sulfuric acid at 85℃; for 16h; | 69% |
methanol
4-chloropicolinic acid
4-Chloro-pyridine-2-carboxylic acid methyl ester
Conditions | Yield |
---|---|
Stage #1: 4-chloropicolinic acid With oxalyl dichloride; N,N-dimethyl-formamide In dichloromethane at 0 - 20℃; Stage #2: methanol at 20℃; for 0.5h; | 92% |
Stage #1: 4-chloropicolinic acid With oxalyl dichloride; N,N-dimethyl-formamide In dichloromethane at 0 - 20℃; for 1.5h; Stage #2: methanol at 20℃; for 0.5h; | 90% |
Stage #1: 4-chloropicolinic acid With oxalyl dichloride; N,N-dimethyl-formamide In dichloromethane at 20℃; for 2h; Stage #2: methanol at 20℃; for 16h; | 74% |
4-chloropicolinic acid
4-Amino-1-cyclohexyl-3-methyl-1H-pyrazole-5-carboxamide
N-[5-(aminocarbonyl)-1-cyclohexyl-3-methyl-1H-pyrazol-4-yl]-4-chloro-2-pyridinecarboxamide
Conditions | Yield |
---|---|
With 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride In dichloromethane at 0℃; for 3h; | 91% |
4-chloropicolinic acid
4,5-difluoroindoline hydrochloride
(4-chloro-pyridin-2-yl)-(4,5-difluoro-2,3-dihydro-indol-1-yl)-methanone
Conditions | Yield |
---|---|
With O-(benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium tetrafluoroborate; triethylamine In N,N-dimethyl-formamide at 20℃; | 91% |
4-chloropicolinic acid
methyl-d3-amine hydrochloride
4-chloropyridinyl-2-(N-1',1',1'-trideuteromethylcarboxamide)
Conditions | Yield |
---|---|
With N-ethyl-N,N-diisopropylamine; HATU In N,N-dimethyl-formamide at 20℃; for 16h; | 91% |
Conditions | Yield |
---|---|
With sulfuric acid | 90% |
Stage #1: 4-chloropicolinic acid With thionyl chloride at 100℃; for 6h; Stage #2: ethanol at 20℃; for 20h; | 89% |
Stage #1: 4-chloropicolinic acid With thionyl chloride at 100℃; for 6h; Stage #2: ethanol at 0 - 20℃; for 8h; | 85% |
Stage #1: 4-chloropicolinic acid With thionyl chloride at 100℃; for 6h; Inert atmosphere; Stage #2: ethanol at 20℃; for 25.5h; Cooling with ice; Stage #3: With sodium hydrogencarbonate In water | 83.6% |
With sulfuric acid for 2h; Inert atmosphere; Reflux; | 55.7% |
Conditions | Yield |
---|---|
Stage #1: 4-chloropicolinic acid With 4-methyl-morpholine; isobutyl chloroformate In dichloromethane at 0℃; for 0.5h; Inert atmosphere; Stage #2: (S)-tert-leucinol With 4-methyl-morpholine In dichloromethane at 0 - 20℃; for 3h; Inert atmosphere; | 90% |
Conditions | Yield |
---|---|
Stage #1: 4-chloropicolinic acid With oxalyl dichloride; N,N-dimethyl-formamide In dichloromethane for 1.5h; Stage #2: isopropyl alcohol In dichloromethane Stage #3: With sodium hydrogencarbonate In dichloromethane | 87% |
Conditions | Yield |
---|---|
In water | 86.4% |
Conditions | Yield |
---|---|
With tert-butylhypochlorite; chloranil at 110℃; for 12h; Inert atmosphere; | 86% |
4-chloropicolinic acid
5-fluoroindoline
(4-chloropyridin-2-yl)-(5-fluoro-2,3-dihydroindol-1-yl)-methanone
Conditions | Yield |
---|---|
With O-(benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium tetrafluoroborate; triethylamine In N,N-dimethyl-formamide at 20℃; | 85% |
4-chloropicolinic acid
Conditions | Yield |
---|---|
With O-(1H-benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium hexafluorophosphate; N-ethyl-N,N-diisopropylamine In N,N-dimethyl-formamide at 20℃; for 10h; | 85% |
Conditions | Yield |
---|---|
With sodium carbonate; copper(l) chloride In N,N-dimethyl-formamide at 140℃; for 8h; | 84.5% |
4-chloropicolinic acid
aniline
4-chloro-N-phenylpyridine-2-carboxamide
Conditions | Yield |
---|---|
With benzotriazol-1-ol; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride; N-ethyl-N,N-diisopropylamine In dichloromethane at 20℃; | 84% |
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 25℃; for 4h; | 69% |
Conditions | Yield |
---|---|
With benzotriazol-1-ol; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride In dichloromethane at 20℃; for 0.5h; | 83% |
Conditions | Yield |
---|---|
In acetone at 20℃; Inert atmosphere; Schlenk technique; | 82% |
Conditions | Yield |
---|---|
With dmap; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride In dichloromethane at 20℃; for 12h; Inert atmosphere; Sealed tube; | 81% |
With dmap; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride In dichloromethane at 0 - 20℃; for 12h; Inert atmosphere; |
Conditions | Yield |
---|---|
In N,N-dimethyl-formamide at 160℃; for 3h; | 80% |
In N,N-dimethyl-formamide at 160℃; for 3h; | 8% |
Conditions | Yield |
---|---|
Stage #1: 4-chloropicolinic acid With 1,1'-carbonyldiimidazole In N,N-dimethyl-formamide at 50℃; for 0.883333h; Inert atmosphere; Glovebox; Stage #2: diethylamine In N,N-dimethyl-formamide at 50℃; for 12h; Inert atmosphere; Schlenk technique; | 80% |
Conditions | Yield |
---|---|
Stage #1: 4-chloropicolinic acid With 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 0℃; Inert atmosphere; Cooling with ice; Stage #2: C17H28N4O4S*C2HF3O2 With N-ethyl-N,N-diisopropylamine In N,N-dimethyl-formamide at 0℃; Inert atmosphere; Cooling with ice; | 80% |
4-chloropicolinic acid
sodium cyclopropylsulfinate
4-(cyclopropylsulfonyl)picolinic acid
Conditions | Yield |
---|---|
With quinoline; copper(l) chloride In 1-methyl-pyrrolidin-2-one at 140℃; for 0.166667h; Microwave irradiation; | 75% |
Conditions | Yield |
---|---|
With tert-butylhypochlorite; potassium carbonate at 40℃; for 15h; Schlenk technique; | 75% |
With tert-butylhypochlorite; potassium carbonate at 60℃; for 20h; | 75% |
4-chloropicolinic acid
Conditions | Yield |
---|---|
Stage #1: 4-chloropicolinic acid With benzotriazol-1-ol; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride In N,N-dimethyl-formamide at 20℃; for 0.5h; Stage #2: C14H12N4O With dmap In N,N-dimethyl-formamide at 20℃; for 18h; | 74.5% |
4-chloropicolinic acid
N,N-dimethyl-formamide
4-Chloro-pyridine-2-carboxylic acid methyl ester
Conditions | Yield |
---|---|
With oxalyl dichloride In methanol; dichloromethane at 0 - 20℃; for 18h; | 74% |
The 4-Chloropyridine-2-carboxylic acid, with the cas register number 5470-22-4, is also known to us as iflab-bb f1926-0017; 4-chloropicolinic acid; 4-chloropyridine-2-carboxylic acid; 4-chloro-2-pyridinecarboxylic acid; chloropicolinicacid; 4-chloropyridine-2-carboxylic; 4-chloropicolinic acid 99%; 4-chloropicolinic acid ,98%.
The physical properties of this chemical are as followings: (1)ACD/LogP: 0.76; (2)ACD/BCF (pH 5.5): 1; (3)ACD/BCF (pH 7.4): 1; (4)ACD/KOC (pH 5.5): 1 ; (5)ACD/KOC (pH 7.4): 1; (6)#H bond acceptors: 3 ; (7)#H bond donors: 1; (8)#Freely Rotating Bonds: 1; (9)Polar Surface Area: 39.19 ; (10)Index of Refraction: 1.59; (11)Molar Refractivity: 36.16 cm3; (12)Molar Volume: 107.1 cm3; (13)Polarizability: 14.33× 10-24 cm3; (14)Surface Tension: 61 dyne/cm; (15)Density: 1.47 g/cm3; (16)Flash Point: 140.1 °C; (17)Enthalpy of Vaporization: 57.93 kJ/mol; (18)Boiling Point: 308 °C at 760 mmHg; (19)Vapour Pressure: 0.000303 mmHg at 25°C.
Being a kind of irritant chemical to eyes, respiratory system and skin, it may cause inflammation to the skin or other mucous membranes. So while dealing with this chemical, you'd better take the following instrction. Wear suitable protective clothing, gloves and eye/face protection, and if in case of contact with eyes, rinse immediately with plenty of water and seek medical advice. When store it, it should be kept in cool storeroom.
This kind of chemical is usually applied in BPC(bulk pharmaceutical chemicals). As to its product categories, there are various, including blocks; carboxes; pyridines; pyridine series; acids and derivatives; heterocycles; pharmacetical; carboxylic acids; pyridine; chloropyridines; halopyridines; carboxylic acids; While its raw materials are hydrochloric acid, acetic acid glacial, nitric acid, sodium carbonate, hydrogen peroxide, potassium permanganate, sulfuric acid, 2-picoline, 2-methyl-4-nitropyridine.
In addition, you could obtain the molecular structure by converting the following datas:
SMILES:Clc1ccnc(C(=O)O)c1
InChI:InChI=1/C6H4ClNO2/c7-4-1-2-8-5(3-4)6(9)10/h1-3H,(H,9,10)
InChIKey:NNMYRMGMVLMQAY-UHFFFAOYAQ
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