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Chemical Structure| 172349-09-6

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Product Details of [ 172349-09-6 ]

CAS No. :172349-09-6
Formula : C6H5NOS
M.W : 139.18
SMILES Code : N#CC1=CC=C(CO)S1
MDL No. :MFCD22987913

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* 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 [ 172349-09-6 ]

[ 172349-09-6 ] Synthesis Path-Downstream   1~1

  • 1
  • [ 21512-16-3 ]
  • [ 172349-09-6 ]
YieldReaction ConditionsOperation in experiment
6.1 g (88%) With sodium borohydrid; In ethanol; B) Preparation of 2-cyano-5-(hydroxymethyl)thiophene To a solution of 2-cyano-5-formyl-thiophene (6.9 g, 50 mmol) in EtOH (100 mL) was added sodium borohydride (1.9 g, 50 mmol) in portions. After 5 min of stirring, the solvent was removed in vacuo and the residue was partitioned between ethyl acetate and brine. The layers were separated and the organic phase was washed once with 1M citric acid and once with brine, then dried (MgSO4), filtered and concentrated in vacuo to give 6.1 g (88percent) of 2-cyano-5-(hydroxymethyl)thiophene. 1 H NMR FD-MS, m/e 140 (M+) Analysis for C6 H5 NOS:Calc: C, 51.78; H, 3.62; N, 10.06;Found: C, 51.54; H, 3.62; N, 9.86.
6.1 g (88%) With sodium borohydrid; In ethanol; B) Preparation of 2-cyano-5-(hydroxymethyl)thiophene To a solution of 2-cyano-5-formyl-thiophene (6.9 g, 50 mmol) in EtOH (100 mL) was added sodium borohydride (1.9 g, 50 mmol) in portions. After 5 min of stirring, the solvent was removed in vacuo and the residue was partitioned between ethyl acetate and brine. The layers were separated and the organic phase was washed once with 1M citric acid and once with brine, then dried (MgSO4), filtered and concentrated in vacuo to give 6.1 g (88percent) of 2-cyano-5-(hydroxymethyl)thiophene. 1 H NMR FD-MS, m/e 140 (M+) Analysis for C6 H5 NOS: Calc: C, 51.78; H, 3.62; N, 10.06; Found: C, 51.54; H, 3.62; N, 9.86.
6.1 g (88%) With sodium borohydrid; In ethanol; B) Preparation of 2-cyano-5-(hydroxymethyl)thiophene To a solution of 2-cyano-5-formyl-thiophene (6.9 g, 50 mmol) in EtOH (100 mL) was added sodium borohydride (1.9 g, 50 mmol) in portions. After 5 min of stirring, the solvent was removed in vacuo and the residue was partitioned between ethyl acetate and brine. The layers were separated and the organic phase was washed once with 1M citric acid and once with brine, then dried (MgSO4), filtered and concentrated in vacuo to give 6.1 g (88percent) of 2-cyano-5-(hydroxymethyl)thiophene. 1 H NMR FD-MS, m/e 140 (M+) Analysis for C6 H5 NOS: Calc: C, 51.78; H, 3.62; N, 10.06; Found: C, 51.54; H, 3.62; N, 9.86.
6.1 g (88%) With sodium borohydrid; In ethanol; B) Preparation of 2-cyano-5-(hydroxymethyl)thiophene To a solution of 2-cyano-5-formyl-thiophene (6.9 g, 50 mmol) in EtOH (100 mL) was added sodium borohydride (1.9 g, 50 mmol) in portions. After 5 min of stirring, the solvent was removed in vacuo and the residue was partitioned between ethyl acetate and brine. The layers were separated and the organic phase was washed once with 1M citric acid and once with brine, then dried (MgSO4), filtered and concentrated in vacuo to give 6.1 g (88percent) of 2-cyano-5-(hydroxymethyl)thiophene. 1 H NMR FD-MS, m/e 140 (M+) Analysis for C6 H5 NOS: Calc: C, 51.78; H, 3.62; N, 10.06; Found: C, 51.54; H, 3.62; N, 9.86.
(1) 5-Hydroxymethylthiophene-2-carbonitrile 5-Formylthiophene-2-carbonitrile obtained in Example 155-(1) (274 mg) was dissolved in tetrahydrofuran (3 mL). Sodium borohydride (151 mg) was added at room temperature and the mixture was stirred for 1.5 hours. 1 M hydrochloric acid and water were sequentially added to the reaction mixture, followed by extraction with ethyl acetate. The organic layer was washed with a saturated sodium chloride solution, dried over magnesium sulfate and filtered. Then, the solvent was evaporated under reduced pressure. The residue was purified by silica gel column chromatography (heptane-ethyl acetate) to obtain the title compound (277 mg). 1H-NMR (400 MHz, CDCl3) delta (ppm): 1.20 (t, J=5.6 Hz, 1H) , 4.88 (d, J=5.6 Hz, 2H), 6.98 (d, J=3.6 Hz, 1H), 7.50 (d, J=3.6 Hz, 1H).

 

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