ETHYL 7-AMINOTHIENO[2,3-B]PYRAZINE-6-CARBOXYLATE

Product Name: ETHYL 7-AMINOTHIENO[2,3-B]PYRAZINE-6-CARBOXYLATE
CAS No.: 56881-21-1
Chemical Name: ETHYL 7-AMINOTHIENO[2,3-B]PYRAZINE-6-CARBOXYLATE
Synonyms: ETHYL 7-AMINOTHIENO[2,3-B]PYRAZINE-6-CARBOXYLATE;Ethyl 7-aminothieno[2,3-b]pyrazine-6-carboxylate, 97+%;7-Aminothieno[2,3-b]pyrazine-6-carboxylic acid ethyl ester;Thieno[2,3-b]pyrazine-6-carboxylic acid, 7-amino-, ethyl ester
CBNumber: CB8838715
Molecular Formula: C9H9N3O2S
Formula Weight: 223.25
MOL File: 56881-21-1.mol

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ETHYL 7-AMINOTHIENO[2,3-B]PYRAZINE-6-CARBOXYLATE Property

Melting point:: 119.5 °C
Boiling point:: 390.4±37.0 °C(Predicted)
Density: 1.429±0.06 g/cm3(Predicted)
storage temp.: under inert gas (nitrogen or Argon) at 2–8 °C
solubility: Chloroform (Slightly), Methanol (Slightly, Sonicated)
form: Solid
pka: 0.65±0.40(Predicted)
color: Pale Yellow to Light Yellow

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Safety

HS Code: 2934999090

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Hazard and Precautionary Statements (GHS)

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N-Bromosuccinimide Price

TRC

Product number: E899665
Product name: Ethyl7-Aminothieno[2,3-b]pyrazine-6-carboxylate
Packaging: 1g
Price: $200
Updated: 2021/12/16

Apolloscientific

Product number: OR960335
Product name: Ethyl7-aminothieno[2,3-b]pyrazine-6-carboxylate
Packaging: 1g
Price: $50
Updated: 2021/12/16

AK Scientific

Product number: Y9505
Product name: Ethyl7-aminothieno[2,3-b]pyrazine-6-carboxylate
Packaging: 5g
Price: $291
Updated: 2021/12/16

American Custom Chemicals Corporation

Product number: CHM0141068
Product name: ETHYL-7-AMINOTHIENO[2,3-B]PYRAZINE-6-CARBOXYLATE
Purity: 95.00%
Packaging: 1G
Price: $931.39
Updated: 2021/12/16

Chemenu

Product number: CM168078
Product name: Ethyl7-aminothieno[2,3-b]pyrazine-6-carboxylate
Purity: 95%+
Packaging: 10g
Price: $1067
Updated: 2021/12/16

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ETHYL 7-AMINOTHIENO[2,3-B]PYRAZINE-6-CARBOXYLATE Chemical Properties,Usage,Production

Synthesis

623-51-8

55557-52-3

56881-21-1

Step 7: Synthesis of ethyl 7-aminothieno[2,3-b]pyrazine-6-carboxylate (7) 3-Chloropyrazine-2-carbonitrile (17.9 g, 128 mmol), sodium carbonate (17.7 g, 167 mmol), and ethyl ethyl-2-mercaptoacetate (18.4 mL, 167 mmol) were dissolved in ethanol (120 mL) and heated and refluxed for 4.5 hours. After completion of the reaction, the reaction was quenched with deionized water (1.5 L) and stirring was continued for 30 minutes. The precipitate was collected by filtration and washed with deionized water. The solid residue was dissolved in ether and filtered to remove the black precipitate. The ether was evaporated under reduced pressure to give pure ethyl 7-aminothieno[2,3-b]pyrazine-6-carboxylate (7) (19.6 g, 68.5% yield). 1H-NMR (400 MHz, CDCl3) δ: 1.42 (t, J=7.2 Hz, 3H), 4.40 (q, J=7.2 Hz, 2H), 6.19 (br s, 1H), 8.58 (d, J=2.2 Hz, 1H), 8.63 (d, J=2.2 Hz, 1H).

References

[1] Bioorganic and Medicinal Chemistry Letters, 2012, vol. 22, # 11, p. 3643 - 3647
[2] Tetrahedron, 2008, vol. 64, # 7, p. 1333 - 1344
[3] Patent: WO2011/147764, 2011, A1. Location in patent: Page/Page column 27
[4] Patent: US2013/79341, 2013, A1. Location in patent: Paragraph 0110
[5] Journal of Heterocyclic Chemistry, 1975, vol. 12, p. 513 - 516

ETHYL 7-AMINOTHIENO[2,3-B]PYRAZINE-6-CARBOXYLATE Preparation Products And Raw materials

Raw materials

Preparation Products

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56881-21-1, ETHYL 7-AMINOTHIENO[2,3-B]PYRAZINE-6-CARBOXYLATERelated Search:

(Quinolin-7-yl)methanamin hydrochloride Pyrido[2,3-b]pyrazin-7-amine (9CI) 7-Aminoquinoline 7-Amino-1,2,3,4-tetrahydroquinoline 7-Aminooxindole 7-aMinoquinoline-3-carboxylic acid 7-Amino-1-methyl-1,2,3,4-tetrahydroquinoline 7-Aminoisoquinoline 1H-pyrrolo[3,2-b]pyridin-7-amine Furo[2,3-b]pyrazine-6-carboxylic acid, 7-amino-, ethyl ester (9CI) 7-amino-1H-pyrrolo[2,3-c]pyridine THIENO[2,3-B]PYRAZINE-6-CARBOXYLIC ACID THIENO[2,3-B]PYRAZINE-6-CARBALDEHYDE THIENO[2,3-B]PYRAZIN-7-AMINE 7-AMINOTHIENO[2,3-B]PYRAZINE-6-CARBOXYLIC ACID Thieno[2,3-b]pyrazine ETHYL 3-AMINOTHIOPHENE-2-CARBOXYLATE ETHYL 7-AMINOTHIENO[2,3-B]PYRAZINE-6-CARBOXYLATE

ETHYL 7-AMINOTHIENO[2,3-B]PYRAZINE-6-CARBOXYLATE

Ethyl 7-aminothieno[2,3-b]pyrazine-6-carboxylate, 97+%

7-Aminothieno[2,3-b]pyrazine-6-carboxylic acid ethyl ester

Thieno[2,3-b]pyrazine-6-carboxylic acid, 7-amino-, ethyl ester

56881-21-1