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Chemical Structure| 75523-42-1 Chemical Structure| 75523-42-1

Structure of 75523-42-1

Chemical Structure| 75523-42-1

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Product Details of [ 75523-42-1 ]

CAS No. :75523-42-1
Formula : C7H8ClN
M.W : 141.60
SMILES Code : CC1=NC=CC(CCl)=C1
MDL No. :MFCD10697557

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Application In Synthesis of [ 75523-42-1 ]

* 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 [ 75523-42-1 ]

[ 75523-42-1 ] Synthesis Path-Downstream   1~1

  • 1
  • [ 105250-16-6 ]
  • [ 75523-42-1 ]
YieldReaction ConditionsOperation in experiment
100% Example 196 5-[(2-Chlorophenyl)acetylamino]-3-(4-fluorophenyl)-4-[4-(2-methylpyridyl)]isoxazole a) 4-Chloromethyl-2-methylpyridine; Into 100 mL of methylene chloride solution containing 2. 1-6 g of 4-(2-methylpyridyl)methanol (cf. PCT International Publication WO98/2120 Pamphlet), 23 mL of thionyl chloride was dropped at room temperature, followed by 20 hours' stirring at room temperature. The solvent was distilled off from the reaction solution under reduced pressure, and the residue was extracted with methylene chloride, after addition of saturated aqueous NaHCO3 solution. The methylene chloride extract was dried over anhydrous magnesium sulfate, and from which the solvent was distilled off under reduced pressure to provide 2.46 g (yield: 100%) of brown crystalline title compound. 1H-NMR(CDCl3)delta:8.45(d,J=5.0Hz,1H),7.31(s,1H), 7.25(d,J=5.0Hz,1H),4.74(s,2H),2.48(s,3H) Mass,m/e:141 (M+,base)
Reference Example 47 3-(3-(4-(2-Methyl-pyridin-4-ylmethoxy)-benzyl)-isoxazol-5-yl)-pyridin-2-ylamine; (2-Methyl-pyridin-4-yl)-methanol (40 mg, 0.33 mmol) described in Manufacturing Example 47-1-1, thionyl chloride (0.047 ml, 0.65 mmol) and methylene chloride (4.0 ml) were stirred for 5 minutes at 60 C. Sodium bicarbonate solution and ethyl acetate were added to separate the reaction solution, and the ethyl acetate layer was dried over sodium sulfate. The solvent was evaporated under a reduced pressure to obtain 4chloromethyl-2-methyl-pyridine as a crude product.2 N Sodium hydroxide (0.16 ml, 0.32 mmol) and methanol (1.0 ml) were added to dissolve 4-(5-(2-amino-pyridin-3-yl)isoxazol-3-ylmethyl)-phenol (87 mg, 0.33 mmol) described in Manufacturing Example 5-1-1, and methanol was evaporated under a reduced pressure. A solution of the aforementioned 4-chloromethyl-2-methyl-pyridine dissolved in dimethylformamide (1 ml) was added to the residue and stirred for 10 minutes at 60 C. Water and ethyl acetate were added to separate the reaction solution, the resulting ethyl acetate layer was concentrated under a reduced pressure, and the residue was purified by silica gel column chromatography (heptane:ethyl acetate=1:3) to obtain the title compound (47 mg, 39%).1H-NMR Spectrum (DMSO-d6) delta (ppm): 2.47 (3H, s), 3.96 (2H, s), 5.11 (2H, s), 6.25 (2H, brs), 6.68 (1H, dd, J=4.8, 8.0 Hz), 6.79 (1H, s), 6.97 (2H, d, J=8.8 Hz), 7.20 (1H, d, J=5.2 Hz), 7.25 (2H, d, J=8.8 Hz), 7.29 (1H, s), 7.86 (1H, dd, J=2.0, 8.0 Hz), 8.08 (1H, dd, J=2.0, 4.8 Hz), 8.42 (1H, d, J=5.2 Hz).
(2-Methyl-pyridin-4-yl)-methanol (40 mg, 0.33 mmol) described in Manufacturing Example 47-1-1, thionyl chloride (0.047 ml, 0.65 mmol) and methylene chloride (4.0 ml) were stirred for 5 minutes at 60 C. Sodium bicarbonate solution and ethyl acetate were added to separate the reaction solution, and the ethyl acetate layer was dried over sodium sulfate. The solvent was evaporated under a reduced pressure to obtain 4-chloromethyl-2-methyl-pyridine as a crude product. 2 N Sodium hydroxide (0.16 ml, 0.32 mmol) and methanol (1.0 ml) were added to dissolve 4-(5-(2-amino-pyridin-3-yl)isoxazol-3-ylmethyl)-phenol (87 mg, 0.33 mmol) described in Manufacturing Example 5-1-1, and methanol was evaporated under a reduced pressure. A solution of the aforementioned 4-chloromethyl-2-methyl-pyridine dissolved in dimethylformamide (1 ml) was added to the residue and stirred for 10 minutes at 60 C. Water and ethyl acetate were added to separate the reaction solution, the resulting ethyl acetate layer was concentrated under a reduced pressure, and the residue was purified by silica gel column chromatography (heptane:ethyl acetate=1:3) to obtain the title compound (47 mg, 39%). 1H-NMR Spectrum (DMSO-d6) delta (ppm): 2.47 (3H, s), 3.96 (2H, s), 5.11 (2H, s), 6.25 (2H, brs), 6.68 (1H, dd, J=4.8, 8.0 Hz), 6.79 (1H, s), 6.97 (2H, d, J=8.8 Hz), 7.20 (1H, d, J=5.2 Hz), 7.25 (2H, d, J=8.8 Hz), 7.29 (1H, s), 7.86 (1H, dd, J=2.0, 8.0 Hz), 8.08 (1H, dd, J=2.0, 4.8 Hz), 8.42 (1H, d, J=5.2 Hz).
400 mg With thionyl chloride; In dichloromethane; at 27℃; for 16h; To a solution of <strong>[105250-16-6](2-methylpyridin-4-yl)methanol</strong> (500 mg, 4.06 mmol, commercial source: Combi-Blocks) in dichloromethane (20 mL), thionyl chloride (0.45 mL, 1 .5 mmol) was added at 0 C. The reaction mixture was allowed to 27 C and stirred for 16 h. On completion, the reaction mixture was concentrated under reduced pressure. The residue was neutralized (pH 7) with saturated sodium bicarbonate solution (10 mL) and extracted with ethyl acetate (2x50 mL). The organic layer was dried over Na2S04, filtered and the filtrate was evaporated under reduced pressure to afford 4-(chloromethyl)-2-methylpyridine (400 mg) as an off-white solid. NMR (400 MHz, CDCI3) delta 8.49 (d, J = 5.1 Hz, 1 H), 7.18 (s, 1 H), 7.1 1 (dd, J = 5.2, 1.6 Hz, 1 H), 4.50 (s, 2H), 2.57 (s, 3H). MS m/z [M+H]+= 142.0.

 

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