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Chemical Structure| 612501-80-1

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Product Details of [ 612501-80-1 ]

CAS No. :612501-80-1
Formula : C17H14Cl2FN3O3
M.W : 398.22
SMILES Code : CC(OC1=CC2=C(NC3=CC=CC(Cl)=C3F)N=CN=C2C=C1OC)=O.[H]Cl
MDL No. :N/A
InChI Key :RLTHSYZYTIYDTK-UHFFFAOYSA-N
Pubchem ID :57476866

Safety of [ 612501-80-1 ]

GHS Pictogram:
Signal Word:Warning
Hazard Statements:H302-H315-H319-H335
Precautionary Statements:P261-P280-P301+P312-P302+P352-P305+P351+P338

Application In Synthesis of [ 612501-80-1 ]

* 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 [ 612501-80-1 ]

[ 612501-80-1 ] Synthesis Path-Downstream   1~1

  • 1
  • [ 612501-80-1 ]
  • [ 612501-52-7 ]
YieldReaction ConditionsOperation in experiment
77% With ammonia; In methanol; water; at 50℃; for 2h; 6-ACETOXY-4- (3-CHLORO-2-FLUOROANILINO)-7-METHOXYQUINAZOLINE hydrochloride (8.72 g, 21.9 mmol) was dissolved in methanol (200 ml). Concentrated aqueous ammonia (15 ML) was added, and the solution heated to 50C with stirring for 2 hours, causing precipitation of a cream coloured solid. The solid was collected by filtration, washed with diethyl ether (3x 200 ml), and dried III VACUO at 60C over diphosphorous pentoxide, giving 4- (3-CHLORO-2-FLUOROANILINO)-6-HYDROXY-7-METHOXYQUINAZOLINE as an off white solid (5.40 g, 77%) ; 1H NMR : 3.95 (s, 3H), 7.19 (s, 1H), 7.23 (dd, 1H), 7.42 (dd, 1H), 7.50 (dd, 1H), 7.64 (s, 1H), 8. 32 (s, 1H), 9.43 (s, 1H), 9.67 (br. s, 1H); Mass Spectrum : 320.4, 322.4.
77% With methanol; ammonia; water; at 50℃; for 2h;Product distribution / selectivity; Reference Example 1; 6-Acetoxy-4- (3-chloro-2-fluoroanilino)-7-methoxyquinazoline hydrochloride; 6-Acetoxy-4-chloro-7-methoxyquinazoline (prepared as described in Example 25-5 of in WO01/66099, 6.00 g, 23.8 mmol) and 3-chloro-2-fluoroaniline (3.46 g, 23.8 mmol) were suspended in iso-propanol (200 ml). The mixture was heated to 80C under reflux for 3 hours. The solvent was evaporated; the residue was crystallised from acetonitrile, giving the product hydrochloride as a pale pink crystalline solid (8.16 g, 92%) ; 1H NMR : 2.37 (s, 3H), 4.00 (s, 3H), 7.34 (ddd, 1H), 7.48 (s, 1H), 7.52 (ddd, 1H), 7.61 (ddd, 1H), 8.62 (s, 1H), 8.86 (s, 1H) ; Mass Spectrum: 362.4, 364.4.
75.7% Step 1: Preparation OF4- (3-CHLORO-2-FLUOROANILINO)-6-HVDROXV-7-METHOXYQUINAZOLINE; 6-Acetoxy-7-methoxy-4 (1H)-quinazolinone (150 g; prepared as described in W096/15118, Example 39 thereof), N, N-diisopropylethylamine (123 ml) and toluene (1275 ml) were stirred at 70C, under nitrogen. Phosphorus oxychloride (150 ml) was added over 15 minutes to the slurry at 70C. The mixture was held at 70C for 2 hours to complete the chlorination. A dark brown solution formed after 30 minutes following addition of the phosphorus oxychloride. Toluene (680 ml) was added to the reaction mixture, followed by addition of 3-chloro-2-fluoroaniline (78 ml) over 10 minutes at 70C. On completion of the addition, a solid precipitated resulting in a beige slurry. The slurry was held at 70C for 1 hour and then cooled to ambient temperature. The reaction mixture was filtered and washed with toluene (2 x 300 ml), aqueous IMS (2 x 450 ml and IMS (2 x 450 ML). The solid was left to pull dry on the filter overnight to give 6-ACETOXY-4- (3-CHLORO-2-FLUOROANILINO)-7- methoxyquinazoline. HCl salt; NMR Spectrum: (DMSO d6) 2.39 (s, 3H); 4.02 (s, 3H); 7.36 (t, 1H) ; 7.58 (s, 1H); 7.64 (t, 1H) ; 8.79 (s, 1H) 8.91 (s, 1H); 11.93 (bs 1H); Mass Spectrum : M+H 362. 6-ACETOXY-4- (3-CHLORO-2-FLUOROANILINO)-7-METHOXYQUINAZOLINE. HCL salt (about 253 g), methanol (1900 ml) and water (632.5 ml) were stirred at ambient temperature. Sodium hydroxide solution (47% w/w; 108 ml) was added dropwise and the reaction mixture heated to 60C to form a dark solution. The solution was held at 60C for 1 hour and then screened to a clean vessel. The mixture was cooled to ambient temperature before acetic acid (72. 8 ml) was charged. The precipitated solid was filtered, washed with 50% aqueous methanol (500 ml) and methanol (500 ml), and then dried in a vacuum oven at 45C to give 4- (3-CHLORO-2- fluoroanilino) -6-hydroxy-7-methoxyquinazoline; (204.8 g; 75.7% yield); Melting point 265- 268C ; NMR Spectrum : (DMSO d6) 4.01 (s, 3H); 7.24 (s, 2H); 7.32 (t, 1H); 7.51-7. 56 (m, 2H); 7.78 (s, 1H); 8.58 (s, 1H); Mass Spectrum: (M+H) + 320.
76.2 g With methanol; potassium carbonate; at 20℃; for 8h; The hydrochloride salt of intermediate A (90 g, 0.226 mol) was dissolved in methanol (1 L), potassium carbonate (69 g, 0.5 mol) was added, and the reaction was stirred at room temperature for 8 hours.After the reaction was completed, the reaction liquid was filtered, and the solid was washed with a small amount of methanol.The filtrate was concentrated under reduced pressure, and the solid was added to water (60 mL), slurried at 70 C for 1 hour, cooled and filtered, washed with a small amount of methanol, and dried under vacuum at 50 C to obtain intermediate C (76.2 g, 94%).

 

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