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Chemical Structure| 637-57-0 Chemical Structure| 637-57-0

Structure of 637-57-0

Chemical Structure| 637-57-0

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Product Details of [ 637-57-0 ]

CAS No. :637-57-0
Formula : C10H9NO4
M.W : 207.18
SMILES Code : O=C(OC)/C=C/C1=CC=C([N+]([O-])=O)C=C1
MDL No. :MFCD00136874

Safety of [ 637-57-0 ]

GHS Pictogram:
Signal Word:Warning
Hazard Statements:H315-H319-H335
Precautionary Statements:P233-P260-P261-P264-P271-P280-P302+P352-P304-P304+P340-P305+P351+P338-P312-P321-P332+P313-P337+P313-P340-P362-P403-P403+P233-P405-P501

Application In Synthesis of [ 637-57-0 ]

* 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 [ 637-57-0 ]

[ 637-57-0 ] Synthesis Path-Downstream   1~2

  • 2
  • [ 637-57-0 ]
  • [ 35418-07-6 ]
YieldReaction ConditionsOperation in experiment
95% With hydrogen;palladium 10% on activated carbon; In tetrahydrofuran; methanol; at 25℃; for 10h; Methyl 3-(4-aminophenyl)propanoate (S32). A solution of methyl (E)-3-(4-nitrophenyl)acrylate (S31, 4.10 g, 19.8 mmol) in MeOH (30 mL) and THF (30 mL) was treated with 10% Pd/C (400 mg). The reaction mixture was purged with H2 and was stirred at 25 C for 10 h. The suspension was filtered through diatomaceous earth and concentrated to afford S32 (3.40 g, 19.0 mmol, 95%) as a yellow solid: 1H NMR (CDCl3, 500 MHz) 6.99 (d, 2H, J= 8.2 Hz), 6.63 (d, 2H, J= 8.4 Hz), 3.60 (s, <n="33"/>3H), 2.85 (t, 2H, J= 7.7 Hz), 2.58 (t, 2H, J= 7.7 Hz); 13C NMR (CDCl3, 125 MHz) 173.5, 144.6, 130.5, 129.1 , 115.3, 51.5, 36.1, 30.1.
82.5% With hydrogen;palladium 10% on activated carbon; In 1,4-dioxane; at 20℃; under 3102.97 Torr; for 20h; To a solution of methyl 4-nitrocinnamate obtained in preparation 15 (1.5 g, 7.25 mmol) in dioxane (25 mL) 10% Pd-C (0.6 g) was added and hydrogenated at room temperature at 60 psi for 20 h. The reaction mixture was filtered through celite and concentrated under reduced pressure. The crude residue was purified by column chromatography using 50% EtOAc-pet ether to give pure title compound (1.07 g, 82.5%) as off white solid. [0258] Mp: 142-144 C. [0259] 1H NMR (200 MHz, CDCl3): delta 2.57 (t, J=7.5 Hz, 2H); 2.85 (t, J=7.8 Hz, 2H); 3.66 (s, 3H); 6.64 (d, J=8.3 Hz, 2H); 7.00 (d, J=8.3 Hz, 2H). [0260] Mass m/z (CI): 180 [M+1].
With hydrogen;palladium; In ethyl acetate; b Methyl 3-(4-aminophenyl)propionate 50 g (0.241 mol) of methyl 4-nitrocinnamate are exhaustively hydrogenated at room temperature and 50 psi hydrogen pressure over 5 g of palladium on carbon (10% strength) at catalyst in 1000 ml of ethyl acetate. The catalyst is filtered off and the filtrate is concentrated to dryness in vacuo. The residue is crystallized from ether/petroleum ether. Yield: 40.5 g (94% of theory), Melting point: 52-54 C. Rf: 0.75 (silica gel; methylene chloride/methanol=9.5:0.5)
 

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