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Structure of 945925-78-0

Chemical Structure| 945925-78-0

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Product Details of [ 945925-78-0 ]

CAS No. :945925-78-0
Formula : C7H9IN2
M.W : 248.06
SMILES Code : IC1=NNC2=C1CCCC2
MDL No. :MFCD26406996

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Application In Synthesis of [ 945925-78-0 ]

* 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 [ 945925-78-0 ]

[ 945925-78-0 ] Synthesis Path-Downstream   1~1

  • 1
  • [ 2305-79-5 ]
  • [ 945925-78-0 ]
YieldReaction ConditionsOperation in experiment
83% With iodine; potassium hydroxide; In N,N-dimethyl-formamide; at 0 - 20℃; To a suspension of <strong>[2305-79-5]4,5,6,7-tetrahydroindazole</strong> (700 mg, 5.7 mmol) and KOH (1.2 g, 21.5 mmol) in DMF (20 mL) was added I2 (2.9 g, 11.5 mmol) at 0 C., and the reaction was stirred overnight while warming to rt. The reaction mixture was diluted with sat. Na2S2O3, extracted with EtOAc (50 mL*3), washed with brine (50 mL), dried (MgSO4), and concentrated to give 1.2 g (83%) of the title compound as a yellow oil. 1H NMR (400 MHz, CDCl3): delta 1.73-1.84 (4H, m), 2.40 (2H, t, J=5.6 Hz), 2.54 (2H, t, J=6.0 Hz).
With iodine; silver sulfate; In ethanol; at 20℃; for 18h; Scheme 3- Step 1; A solution of <strong>[2305-79-5]4,5,6,7-tetrahydroindazole</strong> (5.Ig), silver sulphate (17g) and iodine (14g) in ethanol (100ml) was stirred at room temperature for 18 hours then filtered and evaporated. The residue was triturated with DCM then columned in 1-4% MeOH:DCM to afford the desired iodotetrahydroindazole (4g).
With iodine; potassium hydroxide; In N,N-dimethyl-formamide; To a solution of pyrazole 1 in DMF, was added potassium hydroxide (2.0 eq). The reaction was briefly sonicated for 5 min to help dissolution. Iodine (1.25 eq) was then added and the reaction mixture was stirred until complete (using TLC and LC/MS analysis). Additional portion of iodine (ca. 0.25 eq) could be added to drive reaction to completion. Once completed, the reaction was diluted with water and quenched with saturated sodium thiosulfate. The resulting crude mixture was transferred to a separatory funnel and extracted two times with EtOAc. The organic portions were then combined, washed three times with water and one time with brine, dried (Na2S04), filtered, and concentrated. The crude material was purified using Si02 chromatography and an appropriate gradient (ethyl acetate/hexanes or DCM/methanol) to give compound 2, as a solid or liquid. l-(2-f uorobenzyl)-3-(pyrimidin-5-yl)-4,5,6,7-tetrahydro-lH- indazole1H NMR: delta 9.12 (s, 1H), 9.10 (s, 2H), 7.29 (m, 1H), 7.05 (m, 3H), 5.33 (s, 2H), 2.72 (app. t, 2H), 2.57 (app. t, 2H), 1.82 (m, 4H). MS: 309.3 (M+l)
With iodine; sodium methylate; In methanol; at 20℃; for 2h; To a solution of <strong>[2305-79-5]4,5,6,7-tetrahydro-1H-indazole</strong>, (37-S1, 1.22g, 10.0mmol) in anhydrous methanol (25.0 ml), sodium methoxide (1.1g) was added followed by iodine (3.57g) in one portion. The mixture was stirred at room temperature for 2 hours before the volatiles were removed. The residue was mixed with ethyl acetate and filtered through a short pad of silica gel. The filtrate was concentrated and the resulting material (37-S2) was carried forward in the next step without further purification.

 

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