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7149-18-0

Basic Information
CAS No.: 7149-18-0
Name: Ethyl 2-amino-1-cyclopentene-1-carboxylate
Article Data: 17
Molecular Structure:
Molecular Structure of 7149-18-0 (Ethyl 2-amino-1-cyclopentene-1-carboxylate)
Formula: C8H13 N O2
Molecular Weight: 155.197
Synonyms: 1-Amino-2-carbethoxy-1-cyclopentene;2-amino-1-cyclopentene-1-carboxylic acid ethyl ester; Ethyl 2-amino-1-cyclopentene-1-carboxylate;Ethyl 2-amino-1-cyclopentenecarboxylate; NSC 52925
Density: 1.17g/cm3
Melting Point: 57-60 °C
Boiling Point: 272.5°Cat760mmHg
Flash Point: 118.6°C
Solubility: soluble IN WARE
Appearance: light yellow crystalline powder
Hazard Symbols:
Risk Codes: R22;R36/37/38   
Safety: 36/37/39-26
PSA: 52.32000
LogP: 1.64650
Synthetic route
611-10-9

2-ethoxycarbonyl-1-cyclopentanone

7149-18-0

ethyl 2-amino-1-cyclopentene-1-carboxylate

Conditions
ConditionsYield
With ammonia; silica gel at 20℃; for 0.166667h;99%
With ammonium acetate; tetraethoxy orthosilicate In ethanol Heating;90%
With tetraethoxy orthosilicate; ammonium acetate In ethanol for 6h; Reflux; Inert atmosphere;82%
628-20-6

4-Chlorobutyronitrile

105-36-2

ethyl bromoacetate

A

7149-18-0

ethyl 2-amino-1-cyclopentene-1-carboxylate

B

35150-22-2

(Z)-ethyl 2-(pyrrolidin-2-ylidene)acetate

Conditions
ConditionsYield
Stage #1: 4-Chlorobutyronitrile; ethyl bromoacetate With methanesulfonic acid; zinc In tetrahydrofuran for 1h; Blaise reaction; Reflux; Inert atmosphere;
Stage #2: With potassium tert-butylate In tetrahydrofuran at 0 - 20℃; for 5h; Blaise reaction; Inert atmosphere; chemoselective reaction;
A 13%
B 68%
Stage #1: 4-Chlorobutyronitrile; ethyl bromoacetate With methanesulfonic acid; zinc In tetrahydrofuran for 1h; Blaise reaction; Reflux; Inert atmosphere;
Stage #2: With sodium hexamethyldisilazane In tetrahydrofuran at 0℃; Blaise reaction; Inert atmosphere; Reflux; chemoselective reaction;
A 17%
B 12%
105-36-2

ethyl bromoacetate

5332-06-9

4-bromobutanenitrile

7149-18-0

ethyl 2-amino-1-cyclopentene-1-carboxylate

Conditions
ConditionsYield
With methanesulfonic acid; zinc In tetrahydrofuran for 8h; Blaise reaction; Reflux; Inert atmosphere; chemoselective reaction;40%
628-20-6

4-Chlorobutyronitrile

105-36-2

ethyl bromoacetate

A

7149-18-0

ethyl 2-amino-1-cyclopentene-1-carboxylate

B

25219-53-8, 35150-22-2, 108139-96-4

pyrrolidin-2-ylideneacetic acid ethyl ester

Conditions
ConditionsYield
With methanesulfonic acid; zinc In tetrahydrofuran for 15h; Blaise reaction; Reflux; Inert atmosphere; chemoselective reaction;A 29%
B 6%
With methanesulfonic acid; zinc In tetrahydrofuran Inert atmosphere; Reflux;A 29%
B 6%
141-28-6

diethyl adipate

7149-18-0

ethyl 2-amino-1-cyclopentene-1-carboxylate

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: Reaktion ueber mehrere Stufen
2: concentrated alcoholic ammonia / 140 - 150 °C
View Scheme
20873-66-9

ethyl 2-[(ethoxycarbonyl)amino]-1-cyclopentene-1-carboxylate

7149-18-0

ethyl 2-amino-1-cyclopentene-1-carboxylate

Conditions
ConditionsYield
With sodium methylate In methanol
7149-18-0

ethyl 2-amino-1-cyclopentene-1-carboxylate

622-58-2

p-Tolylisocyanate

2-(3-p-Tolyl-ureido)-cyclopent-1-enecarboxylic acid ethyl ester

Conditions
ConditionsYield
In toluene Heating;83%
7149-18-0

ethyl 2-amino-1-cyclopentene-1-carboxylate

2909-38-8

m-chlorophenyl isocyanate

2-[3-(3-Chloro-phenyl)-ureido]-cyclopent-1-enecarboxylic acid ethyl ester

Conditions
ConditionsYield
In toluene Heating;78%
7149-18-0

ethyl 2-amino-1-cyclopentene-1-carboxylate

24066-82-8

ethyl 2-isothiocyanatoacetate

ethyl 2-[3-ethoxycarbonylmethylthioureido]cyclopentene-1-carboxylate

Conditions
ConditionsYield
With pyridine for 2h; Heating;76%
7149-18-0

ethyl 2-amino-1-cyclopentene-1-carboxylate

621-29-4

3-tolyl isocyanate

2-(3-m-Tolyl-ureido)-cyclopent-1-enecarboxylic acid ethyl ester

Conditions
ConditionsYield
In toluene Heating;66%
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  • 7149-18-0  CAS NO.7149-18-0

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    7149-18-0 CAS NO.7149-18-0

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Chemistry

Molecular structure of Ethyl 2-amino-1-cyclopentene-1-carboxylate (CAS NO.7149-18-0) is:

Product Name: Ethyl 2-amino-1-cyclopentene-1-carboxylate
CAS Registry Number: 7149-18-0
IUPAC Name: Ethyl 2-aminocyclopentene-1-carboxylate
Molecular Weight: 155.19432 [g/mol]  
Molecular Formula: C8H13NO2  
XLogP3-AA: 1.3  
H-Bond Donor: 1  
H-Bond Acceptor: 3
Melting Point: 57-60 °C 
Water Solubility: soluble
Index of Refraction: 1.51 
Molar Refractivity: 41.79 cm3 
Molar Volume: 139.6 cm3
Surface Tension: 42.2 dyne/cm 
Density: 1.111 g/cm3 
Flash Point: 124.3 °C 
Enthalpy of Vaporization: 49.99 kJ/mol 
Boiling Point: 262.1 °C at 760 mmHg
Vapour Pressure: 0.0111 mmHg at 25 °C

Safety Profile

Safty information about Ethyl 2-amino-1-cyclopentene-1-carboxylate (CAS NO.7149-18-0) is:
Hazard Codes: HarmfulXn
Risk Statements: 36/37/38-22 
R36/37/38:Irritating to eyes, respiratory system and skin. 
R22:Harmful if swallowed.
Safety Statements: 36/37/39-26 
S36/37/39:Wear suitable protective clothing, gloves and eye/face protection. 
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.

Specification

 Ethyl 2-amino-1-cyclopentene-1-carboxylate , its cas register number is 7149-18-0. It also can be called 1-Cyclopentene-1-carboxylicacid, 2-amino-, ethyl ester .It is a light yellow crystalline powder.