Home Cart Sign in  
Chemical Structure| 494833-79-3 Chemical Structure| 494833-79-3

Structure of 494833-79-3

Chemical Structure| 494833-79-3

3-Amino-5-bromothiophene-2-carboxamide

CAS No.: 494833-79-3

4.5 *For Research Use Only !

Cat. No.: A291410 Purity: 95+%

Change View

Size Price

US Stock

Global Stock

In Stock
5g łďËͶÊÊ Inquiry Inquiry

US Stock: ship in 0-1 business day
Global Stock: ship in 5-7 days

  • 5g

    łďËͶÊÊ

In Stock

- +

US Stock: ship in 0-1 business day
Global Stock: ship in 2 weeks

  • 1-2 Day Shipping
  • High Quality
  • Technical Support
Product Citations

Alternative Products

Product Details of [ 494833-79-3 ]

CAS No. :494833-79-3
Formula : C5H5BrN2OS
M.W : 221.08
SMILES Code : O=C(C1=C(N)C=C(Br)S1)N
MDL No. :N/A

Safety of [ 494833-79-3 ]

GHS Pictogram:
Signal Word:Warning
Hazard Statements:H302-H315-H319-H335
Precautionary Statements:P261-P305+P351+P338

Application In Synthesis of [ 494833-79-3 ]

* All experimental methods are cited from the reference, please refer to the original source for details. We do not guarantee the accuracy of the content in the reference.

  • Downstream synthetic route of [ 494833-79-3 ]

[ 494833-79-3 ] Synthesis Path-Downstream   1~2

  • 1
  • [ 364750-81-2 ]
  • [ 494833-79-3 ]
  • [ 1330783-60-2 ]
YieldReaction ConditionsOperation in experiment
A) Production of tert-butyl (2S,4S)-2-[(5-bromo-2-carbamoylthiophen-3-yl)carbamoyl]-4-methylpyrrolidine-1-carboxylate To a solution of (4S)-1-(tert-butoxycarbonyl)-4-methyl-L-proline (491 mg) and triethylamine (0.353 mL) in tetrahydrofuran (5 mL) was added 2-methylpropyl chlorocarbonate (0.292 mL) at 0°C, and the mixture was stirred at room temperature for 1 hr. Thereafter, to the reaction system was added 3-amino-5-bromothiophene-2-carboxamide (225 mg) produced in Example 1, step D, and the mixture was stirred at 60°C for 24 hr. Ethyl acetate (20 mL) and aqueous sodium hydrogen carbonate (10 mL) were added to the reaction mixture, and the separated aqueous layer was extracted with ethyl acetate (5 mL). The combined organic layers were washed with brine (5 mL) and dried over anhydrous sodium sulfate. Insoluble material was filtered off, the filtrate was concentrated under reduced pressure, and the residue was crystallized from ethanol (5 mL). The obtained colorless solid was fractionated by high performance liquid chromatography (column: CHIRALPAK AD (50 mm i.d..x.500 mm L, manufactured by DAICEL CHEMICAL INDUSTRIES, LTD.), mobile phase: hexane/ethanol (850/150), flow rate: 80 mL/min, column temperature: 30°C) to give the title compound (302 mg) as a colorless solid. 1H-NMR(DMSO-d6) delta 0.94-1.03(3H,m), 1.22(9H,s,major), 1.39(9H,s,minor), 1.41-1.56(1H,m), 2.13-2.33(1H,m), 2.35-2.48(1H,m), 2.82-3.00(1H,m), 3.70(1H,dd,J=10.1,7.5Hz), 4.13(1H,t,J=8.1Hz), 7.71(2H,brs), 8.03(1H,s,minor), 8.05(1H,s,major), 11.65(1H,s). * Observed as a 3:2 mixture of rotamers.
  • 2
  • [ 79128-68-0 ]
  • [ 494833-79-3 ]
 

Historical Records

Technical Information

Categories