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Chemical Structure| 1221171-84-1 Chemical Structure| 1221171-84-1

Structure of 1221171-84-1

Chemical Structure| 1221171-84-1

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Product Details of [ 1221171-84-1 ]

CAS No. :1221171-84-1
Formula : C6H2ClF3INO
M.W : 323.44
SMILES Code : FC(F)(F)OC1=CN=C(Cl)C=C1I
MDL No. :MFCD22571775

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Application In Synthesis of [ 1221171-84-1 ]

* 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 [ 1221171-84-1 ]

[ 1221171-84-1 ] Synthesis Path-Downstream   1~2

  • 1
  • [ 1206972-45-3 ]
  • [ 1221171-84-1 ]
YieldReaction ConditionsOperation in experiment
89% 2-Chloro-4-iodo-5-trifluoromethoxypyridine (28); At 0 0C, diisopropylamine (2.2 g, 3.1 mL, 22.2 mmol, 1.1 eq) was added dropwise to a solution of butyllithium (1.56 M in hexane, 14.2 mL, 22.2 mmol, 1.1 eq) in THF (35 mL). At -78 0C, a solution of <strong>[1206972-45-3]2-chloro-5-trifluoromethoxypyridine</strong> (6, 4.0 g, 20.2 mmol, 1 eq) in THF (10 mL) was added dropwise followed after 2 h by a solution of iodine (5.7 g, 22.2 mmol, 1.1 eq) in THF (10 mL). The reaction mixture was allowed to reach25 0C before being treated with a saturated aqueous solution of sodium sulfite (30 mL) and extracted with dichloromethane (3 x 20 mL). The combined organic layers were dried over sodium sulfate before being evaporated. The crude dark oil was distilled under vacuum (b.p. 95-97 C / 16 mbar) to afford pure 2-chloro-4-iodo-5- trifluoromethoxypyridine (28, 5.8 g, 18.0 mmol, 89%) as colorless needles; m.p. 85-870C.1H NMR (CDCl3, 300 MHz): delta = 8.17 (s, 1 H), 7.80 (s, 1 H). - 19F NMR (CDCl3, 282 MHz): delta = -58.0. - 13C NMR (CDCl3, 75 MHz): delta = 149.4, 146.6, 141.3, 134.9, 120.5 (q, J= 260 Hz), 103.5.
32% [01258] LDA (7.6 mL, 2M in THF, 1.20 equiv) was added dropwise into a solution of 2-chloro-5- (trifluoromethoxy)pyridine (2.5 g, 12.65 mmol, 1.00 equiv) in tetrahydrofuran (20 mL) at -78C and the reaction mixture was stirred for 2 hours at -78C under nitrogen. To the above mixture was added a solution of ?2 (3.5 g, 13.79 mmol, 1.09 equiv) in tetrahydrofuran (20 mL) dropwise at -78C. After being stirred for 2 hours at room temperature the resulting mixture was then poured into water/ice, extracted with ethyl acetate, washed with brine, dried over anhydrous sodium sulfate, and concentrated under vacuum. The residue was purified by a silica gel colunm eluting with dichloromethane/ethyl acetate (50/1) to afford the title compound (1.75 g, 32%) as a yellow solid. LCMS [M+H] 324.
  • 2
  • [ 1206972-45-3 ]
  • [ 7553-56-2 ]
  • [ 1221171-84-1 ]
 

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