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Chemical Structure| 180340-74-3 Chemical Structure| 180340-74-3

Structure of 180340-74-3

Chemical Structure| 180340-74-3

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Product Details of [ 180340-74-3 ]

CAS No. :180340-74-3
Formula : C14H8ClF3O
M.W : 284.66
SMILES Code : O=C(Cl)C1=CC=CC=C1C2=CC=C(C(F)(F)F)C=C2
MDL No. :MFCD12031834

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Application In Synthesis of [ 180340-74-3 ]

* 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 [ 180340-74-3 ]

[ 180340-74-3 ] Synthesis Path-Downstream   1~2

  • 2
  • [ 98276-57-4 ]
  • [ 109-89-7 ]
  • [ 180340-74-3 ]
  • [ 339538-56-6 ]
YieldReaction ConditionsOperation in experiment
30% With sodium hydroxide; nitrogen; In tetrahydrofuran; dichloromethane; Preparation 6 4'-Trifluoromethyl-biphenyl-2-carboxylic acid (3-amino-4-formyl-phenyl)-amide To a nitrogen purged 12 liter 3-neck flask fitted with a mechanical stirrer and temperature probe was added THF (4.3 L) and <strong>[98276-57-4]2,4-diaminobenzaldehyde</strong> (50 g, 0.37 mol, 1 equiv). After cooling the solution to -70 C. (dry ice/acetone bath), poly(4-vinylpyridine), which can be obtained form Aldrich, Milwaukee, Wis., 25% cross-linked, (210 g) was added. A solution of 4'-trifluoromethyl-biphenyl-2-carbonyl chloride (105 g, 0.37 mol, 1 equiv) in THF (1 L) was added at such a rate as to maintain the temperature below -60 C. The light orange reaction mixture was allowed to warm to room temperature over 4 hours to give a dark red reaction mixture. (HPLC analysis showed an 18:1 mixture of mono- (retention time (rt)=4.8 min) to di- (rt=3.1 min) acylated products along with 5% residual starting material (rt=18.8 min), (Zorbax SIL (150 mm) from Agilent Technologies, Palo Alto, Calif. 2 mL/min 90:10 hexanes/isopropanol, 0.1% diethylamine, 250 nm, 40 C.). The reaction was quenched with 1 N NaOH (450 mL) and allowed to stir overnight at 25 C. The reaction mixture was filtered and the solids were washed with ethyl acetate (5*200 mL) and the combined organic layers were concentrated in vacuo to give a brown oil. The oil was dissolved in CH2Cl2 (1.5 L) and silica gel (EM Science, Gibbstown, N.J., 230-400 mesh or 0.04-0.06 mm particle size) (410 g) and Darco G-60 (10 g, BNL Fine Chemicals and Reagents) were added. The slurry was stirred for 15 minutes and filtered. The silica was washed with CH2Cl2 (5*200 mL). The combined organic layers were concentrated in vacuo and the methylene chloride was displaced with 1:1 hexanes/diisopropylether. The precipitated product was collected by suction filtration and dried in air to give 4'-trifluoromethyl-biphenyl-2-carboxylic acid (3-amino-4-formyl-phenyl)-amide (40 g, 30%, 43:1 mono:bis acylated by HPLC) as a light yellow solid. MS (APCI) 385 (M+1)+; 383 (M-1)- 1H NMR (DMSO-d6) delta6.65 (dd, 1H, J=1.7, 8.7 Hz), 7.15 (br s, 2H), 7.25 (s, 1H), 7.38 (d, 1H, J=8.7 Hz), 7.46-7.68 (m, 6H), 7.74 (d, 2H, J=8.3 Hz), 9.57 (s, 1H), 10.51 (s, 1H).
30% With sodium hydroxide; nitrogen; In tetrahydrofuran; dichloromethane; 4'-Trifluoromethyl-biphenyl-2-carboxylic acid (3-amino-4-formyl-phenyl)-amide To a nitrogen purged 12 liter 3-neck flask fitted with a mechanical stirrer and temperature probe was added THF (4.3 L) and <strong>[98276-57-4]2,4-diaminobenzaldehyde</strong> (50 g, 0.37 mol, 1 equiv). After cooling the solution to -70 C. (dry ice/acetone bath), poly(4-vinylpyridine), which can be obtained from Aldrich, Milwaukee, Wis., 25% cross-linked, (210 g) was added. A solution of 4'-trifluoromethyl-biphenyl-2-carbonyl chloride (105 g, 0.37 mol, 1 equiv) in THF (1 L) was added at such a rate as to maintain the temperature below -60 C. The light orange reaction mixture was allowed to warm to room temperature over 4 hours to give a dark red reaction mixture. (HPLC analysis showed an 18:1 mixture of mono- (retention time (rt)=4.8 min) to di- (rt=3.1 min) acylated products along with 5% residual starting material (rt=18.8 min), (Zorbax SlL (150 mm) from Agilent Technologies, Palo Alto, Calif. 2 mL/min 90:10 hexanes/isopropanol, 0.1% diethylamine, 250 nm, 40 C.). The reaction was quenched with 1 N NaOH (450 mL) and allowed to stir overnight at 25 C. The reaction mixture was filtered and the solids were washed with ethyl acetate (5*200 mL) and the combined organic layers were concentrated in vacuo to give a brown oil. The oil was dissolved in CH2Cl2 (1.5 L) and silica gel (EM Science, Gibbstown, N.J., 230-400 mesh or 0.04-0.06 mm particle size) (410 g) and Darco G-60 (10 g, BNL Fine Chemicals and Reagents) were added. The slurry was stirred for 15 minutes and filtered. The silica was washed with CH2Cl2 (5*200 mL). The combined organic layers were concentrated in vacuo and the methylene chloride was displaced with 1:1 hexanes/diisopropylether. The precipitated product was collected by suction filtration and dried in air to give 4'-trifluoromethyl-biphenyl-2-carboxylic acid (3-amino-4-formyl-phenyl)-amide (40 g, 30%, 43:1 mono:bis acylated by HPLC) as a light yellow solid. MS (APCI) 385 (M+1)+; 383 (M-1)- 1H NMR (DMSO-d6) delta6.65 (dd, 1H, J=1.7, 8.7 Hz), 7.15 (br s, 2H), 7.25 (s, 1H), 7.38 (d, 1H, J=8.7 Hz), 7.46-7.68 (m, 6H), 7.74 (d, 2H, J=8.3 Hz), 9.57 (s, 1H), 10.51 (s, 1H).
 

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