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Chemical Structure| 209796-22-5 Chemical Structure| 209796-22-5

Structure of 209796-22-5

Chemical Structure| 209796-22-5

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Product Details of [ 209796-22-5 ]

CAS No. :209796-22-5
Formula : C6H4BrNS
M.W : 202.07
SMILES Code : N#CCC1=C(Br)SC=C1
MDL No. :MFCD26401223

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Application In Synthesis of [ 209796-22-5 ]

* 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 [ 209796-22-5 ]

[ 209796-22-5 ] Synthesis Path-Downstream   1~1

  • 1
  • [ 13781-53-8 ]
  • [ 209796-22-5 ]
YieldReaction ConditionsOperation in experiment
57% With N-Bromosuccinimide; perchloric acid; In tetrachloromethane; at 20℃; for 4.5h; Step 1: Preparation of 2-(2-bromothiophen-3-yl)acetonitrile 5.9 g (46 mmol) of 2-<strong>[13781-53-8](thiophen-3-yl)acetonitrile</strong> were solubilized in 25 ml of carbon tetrachloride with magnetic stirring and 8.27 g (46 mmol) of N-bromosuccinimide were added. Under vigorous stirring, 0.04 ml (0.460 mmol) of perchloric acid were added and the mixture was stirred at r.t. for 4.5 h. 0.155 g (1.839 mmol) of sodium bicarbonate were added to the reaction mixture. The solid was removed by filtration and the filtrate was concentrated in vacuo. The crude residue was purified by flash chromatography on a silica gel cartridge (eluent: heptane/ethyl acetate, 9/1, v/v). 8.47 g (yield=57%) of 2-(2-bromothiophen-3-yl)acetonitrile were obtained as a pale yellow oil. LC-MS: m/z=non-ionized. 1H NMR (300 MHz, DMSO) δ 1H NMR (300 MHz, DMSO) δ 7.67 (d, J=5.6 Hz, 1H), 7.08 (d, J=5.6 Hz, 1H), 3.93 (s, 2H).
57% With N-Bromosuccinimide; perchloric acid; In tetrachloromethane; at 20℃; for 4.5h; 5.9 g (46 mmol) of 2-<strong>[13781-53-8](thiophen-3-yl)acetonitrile</strong> were solubilized in 25 ml of carbon tetrachloride with magnetic stirring and 8.27 g (46 mmol) of N-bromosuccinimide were added. Under vigorous stirring, 0.04 ml (0.460 mmol) of perchloric acid were added and the mixture was stirred at r.t. for 4.5 h. 0.155 g (1.839 mmol) of sodium bicarbonate were added to the reaction mixture. The solid was removed by filtration and the filtrate was concentrated in vacuo. The crude residue was purified by flash chromatography on a silica gel cartridge (eluent: heptane/ethyl acetate, 9/1, v/v). 8.47 g (yield=57%) of 2-(2-bromothiophen-3-yl)acetonitrile were obtained as a pale yellow oil. LC-MS: m/z=non-ionized. 1H NMR (300 MHz, DMSO) δ 1H NMR (300 MHz, DMSO) δ 7.67 (d, J=5.6 Hz, 1H), 7.08 (d, J=5.6 Hz, 1H), 3.93 (s, 2H).
 

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