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Chemical Structure| 174790-34-2 Chemical Structure| 174790-34-2

Structure of 174790-34-2

Chemical Structure| 174790-34-2

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Product Details of [ 174790-34-2 ]

CAS No. :174790-34-2
Formula : C6H9ClN2
M.W : 144.60
SMILES Code : ClCCCC1C=CNN=1
MDL No. :MFCD19233205

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Application In Synthesis of [ 174790-34-2 ]

* 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 [ 174790-34-2 ]

[ 174790-34-2 ] Synthesis Path-Downstream   1~1

  • 1
  • [ 174790-34-2 ]
  • [ 107862-65-7 ]
YieldReaction ConditionsOperation in experiment
39.6% With potassium hydroxide; In water; isopropyl alcohol; at 90℃; for 2.0h; To a solution of 3-(3-chloropropyl)-1H-pyrazole (500 mg, 3.5 mmol) in i-PrOH/H2O (5 mL/1 mL) was added potassium hydroxide (389 mg, 6.9 mmol) and then the reaction mixture was stirred at 90 C. for 2 hrs. The reaction mixture was cooled to ambient temperature, extracted with DCM (3×20 mL). The organic layers were combined, dried over anhydrous magnesium sulfate, filtered, and concentrated under reduced pressure. The residue was purified by chromatography on silica gel (PE: EtOAc=6:1 to 2:1) to give the title compound (150 mg, 39.6% yield) as brown oil. LC-MS (ESI) found: 109 [M+1]
With potassium hydroxide; In water; isopropyl alcohol; for 4.0h;Reflux; To a solution of 3-(3-chloropropyl)-lH-pyrazole in isopropanol (80% solution in water, 30 mL) was added potassium hydroxide (2.0 g, 36 mmol) and then the reaction mixture was heated to reflux. After 4 hours, the reaction mixture was cooled to ambient temperature, diluted with water (15 mL), and extracted with DCM (3 x 30 mL). The organic layers were combined, dried over magnesium sulfate, filtered, and concentrated under reduced pressure. The residue was purified by chromatography on silica gel to afford 5,6-dihydro-4H- pyrrolo[l ,2-&]pyrazole.
With potassium hydroxide; In water; isopropyl alcohol; for 4.0h;Reflux; Compound 15 (0.111mol, 16.0g) was dissolved in a mixture of 2-propanol (240mL) and water (30mL) and KOH (0.122mol, 6.80g) in water (30mL) was added. The reaction mixture was heated to reflux for 4h, then the solution was concentrated and the residue was diluted by 50mL of water. This suspension was extracted with DCM (4×75mL); the combined organic extracts were dried over MgSO4, and concentrated under reduced pressure. The crude product (10.9g of a light yellow liquid) was used without further purification. 1H NMR: delta=7.49 (s, 1H, CH), 5.94 (s, 1H, CH), 4.12 (t, 3J=7.2, 2H, NCH2), 2.84-2.92 (m, 2H, =C-CH2), 2.53-2.65 (m, 2H, NCH2CH2); 13C NMR: delta=145.7 (C), 143.8 (CH), 98.7 (CH), 47.6 (CH2), 26.6 (CH2), 23.0 (CH2); GC-MS m/z (%): 108 (M+, 100), 80 (35), 52 (32); FTIR (film): 2954, 2920, 1614, 1453, 1410, 1323, 1174, 1033, 943. HRMS m/z calcdfor C6H9N2: 109.0760. Found: 109.0765.
With potassium hydroxide; In water; isopropyl alcohol; for 4.0h;Reflux; Step 7: Potassium hydroxide (2.0 g, 36 mmol) was added to the solution of the crude 3- (3-chloro-propyl)-lH-pyrazole in z'-PrOH (80 % in water, 30 mL). The mixture was heated to reflux for 4 hr then cooled to room temperature and diluted with water (15 mL). The aqueous layer was extracted with dichloromethane (3 x 30 mL) and the organic extracts were dried over magnesium sulfate, filtered and concentrated under reduced pressure. The residue was purified by column chromatography on silica gel to give 5,6-dihydro-4H-pyrrolo[l,2-b]pyrazole.

 

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