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Chemical Structure| 1258934-68-7 Chemical Structure| 1258934-68-7

Structure of 1258934-68-7

Chemical Structure| 1258934-68-7

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Product Details of [ 1258934-68-7 ]

CAS No. :1258934-68-7
Formula : C8H11IN2O2S
M.W : 326.16
SMILES Code : O=C(OC(C)(C)C)NC1=C(I)SC=N1

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Application In Synthesis of [ 1258934-68-7 ]

* 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 [ 1258934-68-7 ]

[ 1258934-68-7 ] Synthesis Path-Downstream   1~3

  • 1
  • [ 766-98-3 ]
  • [ 1258934-68-7 ]
  • [ 1235406-42-4 ]
  • [ 1258934-72-3 ]
  • [ 1258934-71-2 ]
  • 2
  • [ 766-98-3 ]
  • [ 1258934-68-7 ]
  • [ 1235406-42-4 ]
  • [ 1258934-71-2 ]
  • 3
  • [ 1235406-42-4 ]
  • [ 1258934-68-7 ]
YieldReaction ConditionsOperation in experiment
86% With N-iodo-succinimide; In 1,2-dichloro-ethane; at 83℃; for 2h; To a solution of <strong>[1235406-42-4]tert-butyl thiazol-4-ylcarbamate</strong> (2.50 g, 12.4 mmol, 1.0 eq) in 1,2-dichloroethane (120 mL), N-iodosuccinimide (3.00 g, 13.3 mmol, 1.07 eq) was added. The resulting suspension was heated at 83 C. until the starting material was consumed (TLC, 2 h), during which it became a red solution. After cooling to room temperature, saturated aqueous Na2S203 and water were added and the layers were separated. The aqueous layer was extracted with CH2Cl2 and the combined organics were dried over MgSO4, decolorized with activated charcoal, filtered through Celite, and evaporated to provide tert-butyl (5-iodothiazol-4-yl)carbamate (3.67 g, 95% purity, 86% yield) as a pale yellow solid. Reactions run at higher concentration resulted in lower yield and purity. 1H NMR (400 MHz, Chloroform-d) delta 8.87 (s, 1H), 6.48 (s, 1H), 1.53 (s, 9H).
85% With N-iodo-succinimide; In 1,2-dichloro-ethane; for 2h;Reflux; 1033 mg (4.59 mmol) of N-iodosuccinimide are introduced into a solution of 800 mg (3.99 mmol) of <strong>[1235406-42-4]tert-butyl N-(1,3-thiazol-4-yl)carbamate</strong> in 40 ml of dichloroethane, and the reaction mixture is heated under reflux for 2 h. After cooling, the mixture is washed twice with water and with saturated sodium thiosulfate solution. The combined organic phases are dried over sodium sulfate, evaporated in vacuo, and the residue is purified by flash chromatography on silica gel (eluent: cyclohexane/ethyl acetate 8/2 to 1/1), giving 1.19 g (3.43 mmol, 85%) of tert-butyl N-(5-iodo-1,3-thiazol-4-yl)carbamate as white crystals after crystallisation from diethyl ether; ESI-MS: m/e: 327 ([M+H]+).
75% With N-iodo-succinimide; In 1,2-dichloro-ethane; at 20℃; for 5h; To a stirred solution of compound 2a (90 g, 1.35 mol) in DCE (1200 mL) was added NIS (135 g, 1.74 mol) portion wise at 20oC and stirred for 5 hrs. The mixture was washed with brine (200 mL), aq. Na2SO3 (200 mL), dried over Na2SO4, filtered, concentrated and purified by column (PE:EtOAc = 20:1~5:1) to give compound 3a (110 g, 75.0%) as a white solid. 1H NMR CDCl3, 400 MHz ^ 8.79 (s, 1 H), 6.53 (bs, 1 H), 1.54 (s, 9 H).
75% With N-iodo-succinimide; In 1,2-dichloro-ethane; at 20℃; for 5h; To a stirred solution of compound 18 (90 g, 1 .35 mol) in DCE (1200 mL) was added NIS (135 g, 1 .74 mol) portion wise at 20C and stirred for 5 hrs. The mixture was washed with brine (200 mL), aq. Na2S03 (200 mL), dried over Na2S04, filtered, concentrated and purified by column (petroleum ether (PE):ethyl acetate(EtOAc) = 20:1 -5:1 ) to give compound 19 (1 10 g, 75%) as a white solid. (0562) H NMR CDCIs, 400 MHz: ppm delta 8.79 (s, 1 H), 6.53 (bs, 1 H), 1.54 (s, 9 H).

 

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