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Chemical Structure| 1223404-89-4 Chemical Structure| 1223404-89-4

Structure of 1223404-89-4

Chemical Structure| 1223404-89-4

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Product Details of [ 1223404-89-4 ]

CAS No. :1223404-89-4
Formula : C16H14F2N4
M.W : 300.31
SMILES Code : FC1=CC=C(F)C([C@@H]2N(C3=NC4=CC=NN4C=C3)CCC2)=C1

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Application In Synthesis of [ 1223404-89-4 ]

* 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 [ 1223404-89-4 ]

[ 1223404-89-4 ] Synthesis Path-Downstream   1~1

  • 1
  • [ 1218935-59-1 ]
  • [ 29274-24-6 ]
  • [ 1223404-89-4 ]
YieldReaction ConditionsOperation in experiment
74% With potassium fluoride; In dimethyl sulfoxide; at 180℃; for 2h; A mixture of 5-chloropyrazolo[1,5-a]pyrimidine (1.18 g, 7.68 mmol), <strong>[1218935-59-1](R)-2-(2,5-difluorophenyl)pyrrolidine</strong> (1.51 g, 8.22 mmol) and KF (2.32 g, 39.1 mmol) in DMSO (26 mL) was heated at 180 C. for 2 hours. The reaction mixture was cooled to room temperature and poured into water. The mixture was stirred for additional 30 min at room temperature. A precipitated solid was collected by filtration and dried under vacuum to afford (R)-5-(2-(2,5-difluorophenyl)pyrrolidin-1-yl)pyrazolo[1,5-a]pyrimidine (1.70 g, 74%) as a yellow solid. 1H-NMR (DMSO-d6, Varian, 400 MHz): delta 1.88-2.06 (3H, m), 2.33-2.45 (1H, m), 3.56-3.70 (1H, m), 3.90-4.00 (1H, m), 5.38 (1H, s), 5.98 (1H, s), 6.10-6.50 (1H, m), 6.85-6.91 (1H, m), 7.10-7.15 (1H, m), 7.26-7.32 (1H, m), 7.81 (1H, d, J=1.6 Hz), 8.60 (1H, s).
68% With N-ethyl-N,N-diisopropylamine; In butan-1-ol; at 160℃;Sealed tube; Preparation B; Preparation of (R)-5-(2-(2,5-difluorophenyl)pyrrolidin-l-yl)pyrazolo?,5-alpyrimidin-3- amine; [00381] Step A: Preparation of (RV5-(2-(2.5-difluorophenyr)pyrrolidin-l- yPpyrazolo [ 1 ,5 -a"|pyrimidine; In a pressure reaction tube was added 5-chloropyrazolo[l,5- a]pyrimidine (4.2 g, 27 mmol), <strong>[1218935-59-1](R)-2-(2,5-difluorophenyl)pyrrolidine</strong> (Preparation A; 5.3 g, 29 mmol), anhydrous n-butanol (5 ml, 55 mmol), and DIEA (9.5 ml, 55 mmol). The yellowish suspension was sealed and heated in an oil bath (160 0C) overnight. The reaction was cooled to ambient temperature, diluted with EtOAc (250 mL), and filtered, rinsing the solid with EtOAc. The filtrate (330 mL) was washed with water (2 x 150 mL), brine (100 mL), concentrated, and purified by silica chromatography, eluting with 2:1 EtOAc/hexanes to give the product as a bright yellowish solid (5.6 g, 68% yield).
 

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