Conditions | Yield |
---|---|
With sulfuric acid; acetonitrile at 80 - 85℃; for 16 - 18h; | 95% |
With sulfuric acid unter Entfernen des entstehenden Wassers; | |
With potassium hydroxide |
Conditions | Yield |
---|---|
With zinc perchlorate; magnesium sulfate In butan-1-ol at 80℃; | 77% |
malononitrile
butan-1-ol
A
cyanoacetic acid butyl ester
B
di-n-butyl malonate
Conditions | Yield |
---|---|
With boron trifluoride diethyl etherate for 21h; Heating; | A 75% B 20% |
Conditions | Yield |
---|---|
With water; acetic acid at 95 - 100℃; |
Conditions | Yield |
---|---|
With potassium fluoride | |
Stage #1: ethyl 2-cyanoacetate; butan-1-ol In nitromethane at 105℃; for 0.5h; Stage #2: With ytterbium(III) triflate In nitromethane; acetonitrile | |
With ytterbium(III) triflate at 100℃; for 8.5h; | |
With tetrabutyl titanate for 3h; Reflux; |
Conditions | Yield |
---|---|
With 1,8-diazabicyclo[5.4.0]undec-7-ene In benzene |
Conditions | Yield |
---|---|
potassium-exchanged zirconium hydrogen phosphate at 40℃; for 1h; | 98% |
Conditions | Yield |
---|---|
With Merrifields's resin-bound piperazine In ethanol for 2h; Condensation; Heating; | 96% |
Conditions | Yield |
---|---|
potassium-exchanged zirconium hydrogen phosphate at 40℃; for 2h; | 96% |
Conditions | Yield |
---|---|
With triphenylphosphine; [IrCl(coe)2]2 In para-xylene at 130℃; for 15h; | 96% |
cyanoacetic acid butyl ester
(E)-1-phenyl-3-(2-(phenylethynyl)phenyl)prop-2-en-1-one
Conditions | Yield |
---|---|
With caesium carbonate In acetonitrile at 20℃; for 3h; stereoselective reaction; | 96% |
Conditions | Yield |
---|---|
Stage #1: formaldehyd; cyanoacetic acid butyl ester With 1,5,7-triazabicyclo[5.5.0]dec-5-ene; triphenylphosphine at 20 - 85℃; under 30 Torr; for 1h; Green chemistry; Stage #2: With phosphorus pentoxide; hydroquinone at 20 - 220℃; under 3 Torr; for 1h; Reagent/catalyst; Green chemistry; | 95.3% |
Stage #1: formaldehyd; cyanoacetic acid butyl ester With piperidine; sodium hydrogencarbonate; sodium carbonate; sodium 4-dodecylbenzenesulfonate In water at 80 - 90℃; for 1h; Stage #2: With phosphoric acid In water Reagent/catalyst; | 81.3% |
Stage #1: formaldehyd; cyanoacetic acid butyl ester With piperidine hydrochloride In toluene at 90 - 200℃; for 0.4h; Dean-Stark; Microwave irradiation; Stage #2: With phosphorus pentoxide; toluene-4-sulfonic acid; hydroquinone In toluene at 200℃; under 17 Torr; for 0.25h; Microwave irradiation; | 72% |
With nitromethane In acetonitrile at 90℃; for 6.5h; Temperature; Knoevenagel Condensation; | |
Stage #1: formaldehyd; cyanoacetic acid butyl ester for 3h; Reflux; Stage #2: Pyrolysis; |
cyanoacetic acid butyl ester
2-(2-bromo-5-chloro-phenyl)-1H-benzoimidazole
C20H18ClN3O2
Conditions | Yield |
---|---|
With copper(l) iodide; potassium carbonate; pipecolic Acid In dimethyl sulfoxide at 80℃; for 12h; Inert atmosphere; | 95% |
cyanoacetic acid butyl ester
3-(N-methyl-N-benzylamino)prop-2-enal
n-butyl 2-chloronicotinate
Conditions | Yield |
---|---|
Stage #1: cyanoacetic acid butyl ester; 3-(N-methyl-N-benzylamino)prop-2-enal With 1-hexyl-3-methylimidazol-1-ium chloride at 160℃; for 1h; Microwave irradiation; Stage #2: With hydrogenchloride | 94.1% |
Stage #1: cyanoacetic acid butyl ester; 3-(N-methyl-N-benzylamino)prop-2-enal With sodium ethanolate at 100℃; Sonication; Stage #2: With hydrogenchloride at 100℃; for 0.583333h; Sonication; | 91.1% |
Conditions | Yield |
---|---|
With triphenylphosphine; bis(1,5-cyclooctadiene)diiridium(I) dichloride In para-xylene at 130℃; for 15h; | 94% |
cyanoacetic acid butyl ester
3-(N,N-diethylamino)propenal
Conditions | Yield |
---|---|
With N-butyl-N-ethylpiperidinium chloride at 65℃; for 10h; | 93.1% |
With sodium ethanolate at 100℃; Microwave irradiation; | 92.2% |
With sodium ethanolate at 100℃; Sonication; | 90.7% |
Conditions | Yield |
---|---|
With Merrifields's resin-bound piperazine In ethanol for 2h; Condensation; Heating; | 93% |
Conditions | Yield |
---|---|
With triphenylphosphine; [IrCl(coe)2]2 In para-xylene at 130℃; for 15h; | 93% |
cyanoacetic acid butyl ester
mer-hydrido[[(butoxycarbonyl)methyl]cyano](butyl cyanoacetate)tris(triphenylphosphine)ruthenium(II)
Conditions | Yield |
---|---|
In tetrahydrofuran byproducts: C2H4; room temp., 6 h; washing (hexane), recrystallization (THF/hexane); elem. anal.; | 93% |
Conditions | Yield |
---|---|
potassium-exchanged zirconium hydrogen phosphate at 40℃; for 3h; | 91% |
Conditions | Yield |
---|---|
potassium-exchanged zirconium hydrogen phosphate at 40℃; for 3h; | 91% |
Conditions | Yield |
---|---|
With triphenylphosphine; bis(1,5-cyclooctadiene)diiridium(I) dichloride In para-xylene at 130℃; for 15h; | 91% |
Conditions | Yield |
---|---|
With triphenylphosphine; bis(1,5-cyclooctadiene)diiridium(I) dichloride In para-xylene at 130℃; for 15h; | 91% |
Conditions | Yield |
---|---|
With sodium methylate In methanol | 91% |
cyanoacetic acid butyl ester
propionaldehyde
butyl α-cyano-α-pentenoate
Conditions | Yield |
---|---|
With zinc(II) acetate dihydrate In methanol at 70℃; for 2h; Temperature; Reflux; | 90.9% |
cyanoacetic acid butyl ester
5-nitro-2-(1-pyrrolidinyl)-benzaldehyde
(E)-2-Cyano-3-(5-nitro-2-pyrrolidin-1-yl-phenyl)-acrylic acid butyl ester
Conditions | Yield |
---|---|
In toluene for 2h; Ambient temperature; | 90% |
Conditions | Yield |
---|---|
With potassium fluoride on basic alumina In ethanol at 30℃; | 90% |
Conditions | Yield |
---|---|
potassium-exchanged zirconium hydrogen phosphate at 40℃; for 6h; | 89% |
cyanoacetic acid butyl ester
C8H7BrN4
butyl 1,3-diamino-6-methylisoquinoline-4-carboxylate
Conditions | Yield |
---|---|
With copper(l) iodide; water; potassium carbonate; pipecolic Acid In N,N-dimethyl-formamide at 80℃; for 24h; Inert atmosphere; | 89% |
Conditions | Yield |
---|---|
With zinc(II) acetate dihydrate In methanol at 70℃; for 2h; Temperature; | 88.1% |
Conditions | Yield |
---|---|
potassium-exchanged zirconium hydrogen phosphate at 40℃; for 2h; | 87% |
Conditions | Yield |
---|---|
With sodium carbonate; copper(l) chloride In dimethyl sulfoxide at 60℃; for 12h; Ullmann type coupling; Inert atmosphere; | 87% |
Conditions | Yield |
---|---|
With potassium fluoride on basic alumina In ethanol at 30℃; | 86% |
Conditions | Yield |
---|---|
With copper(l) iodide; potassium carbonate; pipecolic Acid In dimethyl sulfoxide at 60℃; for 12h; Inert atmosphere; | 86% |
cyanoacetic acid butyl ester
Conditions | Yield |
---|---|
With copper(l) iodide; sodium hydrogencarbonate; L-proline In N,N-dimethyl-formamide at 60℃; Inert atmosphere; chemoselective reaction; | 86% |
n-Butyl cyanoacetate is an organic compound with the formula C7H11NO2, and its systematic name is the same with the product name. With the CAS registry number 5459-58-5, it is also named as Butyl 2-cyanoacetate. It belongs to the product categories of C6 to C7; Carbonyl Compounds; Esters. Its EINECS number is 226-730-1. In addition, the molecular weight is 141.17. Its classification code is TSCA Flag P [A commenced PMN (Premanufacture Notice) substance]. This chemical is stable at common pressure and temperature, and it should be sealed and stored in a cool and ventilated place. Moreover, it should be protected from fire. It is used to prepare butyl cyanoacrylate, and then for the preparation of 504 medical instant cement.
Physical properties of n-Butyl cyanoacetate are: (1)ACD/LogP: 1.058; (2)# of Rule of 5 Violations: 0; (3)ACD/LogD (pH 5.5): -1.11; (4)ACD/LogD (pH 7.4): -1.44; (5)ACD/BCF (pH 5.5): 1.00; (6)ACD/BCF (pH 7.4): 1.00; (7)ACD/KOC (pH 5.5): 1.00; (8)ACD/KOC (pH 7.4): 1.00; (9)#H bond acceptors: 3; (10)#H bond donors: 0; (11)#Freely Rotating Bonds: 5; (12)Polar Surface Area: 50.09 Å2; (13)Index of Refraction: 1.427; (14)Molar Refractivity: 36.167 cm3; (15)Molar Volume: 140.948 cm3; (16)Polarizability: 14.338×10-24cm3; (17)Surface Tension: 35.35 dyne/cm; (18)Density: 1.002 g/cm3; (19)Flash Point: 87.222 °C; (20)Enthalpy of Vaporization: 47.039 kJ/mol; (21)Boiling Point: 233.665 °C at 760 mmHg; (22)Vapour Pressure: 0.05 mmHg at 25°C.
Preparation: this chemical can be prepared by malononitrile and butan-1-ol by heating. This reaction will need reagent BF3·Et2O with the reaction time of 21 hours. The yield is about 75%.
Uses of n-Butyl cyanoacetate: it can be used to produce bromo-cyano-acetic acid butyl ester at the temperature of 100 °C. It will need reagent Br2 and solvent CCl4 with the reaction time of 1 hour. The yield is about 75%.
When you are using this chemical, please be cautious about it as the following:
This chemical is harmful by inhalation, in contact with skin and if swallowed. It is irritating to eyes, respiratory system and skin. In case of contact with eyes, you should rinse immediately with plenty of water and seek medical advice. When using it, you need to wear suitable protective clothing, gloves and eye/face protection.
You can still convert the following datas into molecular structure:
(1)SMILES: CCCCOC(=O)CC#N
(2)Std. InChI: InChI=1S/C7H11NO2/c1-2-3-6-10-7(9)4-5-8/h2-4,6H2,1H3
(3)Std. InChIKey: DJACTCNGCHPGOI-UHFFFAOYSA-N
The toxicity data is as follows:
Organism | Test Type | Route | Reported Dose (Normalized Dose) | Effect | Source |
---|---|---|---|---|---|
mouse | LD50 | oral | 6270mg/kg (6270mg/kg) | LUNGS, THORAX, OR RESPIRATION: DYSPNEA BEHAVIORAL: SOMNOLENCE (GENERAL DEPRESSED ACTIVITY) GASTROINTESTINAL: OTHER CHANGES | Gigiena Truda i Professional'nye Zabolevaniya. Labor Hygiene and Occupational Diseases. Vol. 35(2), Pg. 42, 1991. |
rat | LD50 | oral | 4180mg/kg (4180mg/kg) | LUNGS, THORAX, OR RESPIRATION: DYSPNEA BEHAVIORAL: SOMNOLENCE (GENERAL DEPRESSED ACTIVITY) GASTROINTESTINAL: OTHER CHANGES | Gigiena Truda i Professional'nye Zabolevaniya. Labor Hygiene and Occupational Diseases. Vol. 35(2), Pg. 42, 1991. |
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