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Chemical Structure| 134271-94-6 Chemical Structure| 134271-94-6

Structure of 134271-94-6

Chemical Structure| 134271-94-6

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Product Details of [ 134271-94-6 ]

CAS No. :134271-94-6
Formula : C9H8N2O2
M.W : 176.17
SMILES Code : O=[N+](C1=CC=CC2=C1C(C)=CN2)[O-]
MDL No. :MFCD00962288
InChI Key :JSMHPFAGQBYKJS-UHFFFAOYSA-N
Pubchem ID :3807122

Safety of [ 134271-94-6 ]

GHS Pictogram:
Signal Word:Warning
Hazard Statements:H315-H319-H335
Precautionary Statements:P261-P305+P351+P338

Application In Synthesis of [ 134271-94-6 ]

* 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 [ 134271-94-6 ]

[ 134271-94-6 ] Synthesis Path-Downstream   1~1

  • 1
  • [ 134271-94-6 ]
  • [ 1182822-31-6 ]
  • T3P [ No CAS ]
  • [ 13721-01-2 ]
  • [ 873054-44-5 ]
YieldReaction ConditionsOperation in experiment
With pyridine; hydrogenchloride; sodium methylate; In methanol; water; acetonitrile; An alternative synthesis of Compound 1 is depicted in Scheme 1-7.4-Oxo-1,4-dihydroquinoline-3-carboxylic acid 26 (1.0 eq) and 5-amino-2,4-di-tert-butylphenyl methyl carbonate 32 (1.1 eq) were charged to a reactor. 2-MeTHF (4.0 vol, relative to the acid) was added followed by T3P.(R). 50percent solution in 2-MeTHF (1.7 eq).The T3P charged vessel was washed with 2-MeTHF (0.6 vol).Pyridine (2.0 eq) was then added, and the resulting suspension was heated to 47.5+/-5.0° C. and held at this temperature for 8 hours.A sample was taken and checked for completion by HPLC. Once complete, the resulting mixture was cooled to 20° C.+/-5° C. 2-MeTHF was added (12.5 vol) to dilute the mixture.The reaction mixture was washed with water (10.0 vol) 2 times and 2-MeTHF (16.5 vol) was charged to the reactor.This solution was charged with 30percent w/w NaOMe/MeOH (1.7 equiv) to perform the methanolysis.The reaction was stirred at 25.0° C.+/-5.0° C. for no less than 1.0 hour, and checked for completion by HPLC. Once complete, the reaction was quenched with 1.2 N HCl/H2O (10.0 vol), and washed with 0.1 N HCl/H2O (10.0 vol).The organic solution was polish filtered to remove any particulates and placed in a second reactor.The filtered solution was concentrated at no more than 35° C. (jacket temperature) and no less than 8.0° C. (internal reaction temperature) under reduced pressure to 20 vol.CH3CN was added to 40 vol and the solution concentrated at no more than 35° C. (jacket temperature) and no less than 8.0° C. (internal reaction temperature) to 20 vol.The addition of CH3CN and concentration cycle was repeated 2 more times for a total of 3 additions of CH3CN and 4 concentrations to 20 vol.After the final concentration to 20 vol, 16.0 vol of CH3CN was charged followed by 4.0 vol of H2O to make a final concentration of 40 vol of 10percent H2O/CH3CN relative to the starting acid.This slurry was heated to 78.0° C.+/-5.0° C. (reflux).The slurry was then stirred for no less than 5 hours.The slurry was cooled to 20 to 25° C. over 5 hours, and filtered.The cake was washed with CH3CN (5 vol) heated to 20 to 25° C. 4 times.The resulting solid (Compound 1) was dried in a vacuum oven at 50.0° C.+/-5.0° C. 1H NMR (400 MHz, DMSO-d6) delta 12.8 (s, 1H), 11.8 (s, 1H), 9.2 (s, 1H), 8.9 (s, 1H), 8.3 (s, 1H), 7.2 (s, 1H), 7.9 (t, 1H), 7.8 (d, 1H), 7.5 (t, 1H), 7.1 (s, 1H), 1.4 (s, 9H), 1.4 (s, 9H).
With pyridine; hydrogenchloride; sodium methylate; In methanol; water; acetonitrile; N-(2,4-di-tert-butyl-5-hydroxyphenyl)-4-oxo-1,4-dihydroquinoline-3-carboxamide (1)4-Oxo-1,4-dihydroquinoline-3-carboxylic acid 26 (1.0 eq) and 5-amino-2,4-di-tert-butylphenyl methyl carbonate 32 (1.1 eq) were charged to a reactor. 2-MeTHF (4.0 vol, relative to the acid) was added followed by T3P.(R). 50percent solution in 2-MeTHF (1.7 eq).The T3P charged vessel was washed with 2-MeTHF (0.6 vol).Pyridine (2.0 eq) was then added, and the resulting suspension was heated to 47.5+/-5.0° C. and held at this temperature for 8 hours.A sample was taken and checked for completion by HPLC. Once complete, the resulting mixture was cooled to 25.0° C.+/-2.5° C. 2-MeTHF was added (12.5 vol) to dilute the mixture.The reaction mixture was washed with water (10.0 vol) 2 times.2-MeTHF was added to bring the total volume of reaction to 40.0 vol (~16.5 vol charged).To this solution was added NaOMe/MeOH (1.7 equiv) to perform the methanolysis.The reaction was stirred for no less than 1.0 hour, and checked for completion by HPLC. Once complete, the reaction was quenched with 1 N HCl (10.0 vol), and washed with 0.1 N HCl (10.0 vol).The organic solution was polish filtered to remove any particulates and placed in a second reactor.The filtered solution was concentrated at no more than 35° C. (jacket temperature) and no less than 8.0° C. (internal reaction temperature) under reduced pressure to 20 vol.CH3CN was added to 40 vol and the solution concentrated at no more than 35° C. (jacket temperature) and no less than 8.0° C. (internal reaction temperature) to 20 vol.The addition of CH3CN and concentration cycle was repeated 2 more times for a total of 3 additions of CH3CN and 4 concentrations to 20 vol.After the final concentration to 20 vol, 16.0 vol of CH3CN was added followed by 4.0 vol of H2O to make a final concentration of 40 vol of 10percent H2O/CH3CN relative to the starting acid.This slurry was heated to 78.0° C.+/-5.0° C. (reflux).The slurry was then stirred for no less than 5 hours.The slurry was cooled to 0.0° C.+/-5° C. over 5 hours, and filtered.The cake was washed with 0.0° C.+/-5.0° C. CH3CN (5 vol) 4 times.The resulting solid (Compound 1) was dried in a vacuum oven at 50.0° C.+/-5.0° C. 1H NMR (400 MHz, DMSO-d6) delta 12.8 (s, 1H), 11.8 (s, 1H), 9.2 (s, 1H), 8.9 (s, 1H), 8.3 (s, 1H), 7.2 (s, 1H), 7.9 (t, 1H), 7.8 (d, 1H), 7.5 (t, 1H), 7.1 (s, 1H), 1.4 (s, 9H), 1.4 (s, 9H).
 

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