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Chemical Structure| 1286230-88-3 Chemical Structure| 1286230-88-3

Structure of 1286230-88-3

Chemical Structure| 1286230-88-3

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Product Details of [ 1286230-88-3 ]

CAS No. :1286230-88-3
Formula : C12H11FN2
M.W : 202.23
SMILES Code : FC1=CC=C(C2=NN(C3CC3)C=C2)C=C1

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Application In Synthesis of [ 1286230-88-3 ]

* 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 [ 1286230-88-3 ]

[ 1286230-88-3 ] Synthesis Path-Downstream   1~1

  • 1
  • [ 154258-82-9 ]
  • [ 411235-57-9 ]
  • [ 1286230-88-3 ]
YieldReaction ConditionsOperation in experiment
40% With pyridine; triethylamine; In tetrahydrofuran; for 18h;Reflux; 1-Cyclopropyl-<strong>[154258-82-9]3-(4-fluorophenyl)-1H-pyrazole</strong> [XX-1]; A mixture of 10 g of <strong>[154258-82-9]3-(4-fluorophenyl)-1H-pyrazole</strong> (62 mmol), 10.59 g of cyclopropylboronic acid (123 mmol), 44 mL triethylamine (308 mmol) and 40 mL pyridine (493 mmol) in dry THF is heated under reflux for 18 hrs. Next the reaction mixture is cooled, filtered over Celite and concentrated. The residue is taken up in ethyl acetate, washed with Na2CO3 solution, dried and evaporated under vacuum. The crude product is chromatographed over silica gel and 5 g (40%) of 1-cyclopropyl-<strong>[154258-82-9]3-(4-fluorophenyl)-1H-pyrazole</strong> are obtained.MS (ESI): 203.0 ([M+H]+)1H-NMR (400MHz, CDCl3) delta=7.76-7.73 (m, 2H) 7.435 (d, J=2.04 Hz, 1H), 7.05 (t, J=8.6 Hz, 2H), 6.44 (s, 1H), 3.64-3.58 (m, 1H), 1.24-1.14 (m, 2H), 1.06-1.01 (m, 2H) ppm
39.5% With pyridine; dmap; copper diacetate; In 1,4-dioxane; at 100℃; Intermediate 3 A was prepared according to the procedures described in Org. Lett., 1653-1655 (2008). To a solution of 3-(4-fluorophenyl)-lH-pyrazole (6.5 g, 40.1 mmol) in dioxane (80 mL) were added cyclopropylboronic acid (7.26 g, 85 mmol), DMAP (14.7 g, 120 mmol), diacetoxycopper (7.28 g, 40.1 mmol), and pyridine 3.24 mL, 40.1 mmol). The reaction mixture was heated at 100 C overnight. The reaction mixture was cooled to rt, quenched with water, and extracted with EtOAt. The combined organic layer was washed with brine, dried over anhydrous sodium sulfate, filtered, and concentrated under reduced pressure. The crude product was purified by BIOTAGE (90g Thomson, 0-40% EtOAc/hex) to give Intermediate 3 A (3.2 g, 39.5%) as a tan oil. MS(ES): m/z= 203.13 [M+H]+. HPLC Ret time (Method B): 3.52 min. XH NMR (400MHz, chloroform-d) delta 7.84 - 7.72 (m, 2H), 7.13 - 7.01 (m, 2H), 6.46 (d, J=2.3 Hz, 1H), 3.63 (dt, J=7.2, 3.5 Hz, 1H), 1.21 - 1.11 (m, 2H), 1.11 - 0.90 (m, 2H).
 

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