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Chemical Structure| 58435-22-6 Chemical Structure| 58435-22-6

Structure of 58435-22-6

Chemical Structure| 58435-22-6

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Product Details of [ 58435-22-6 ]

CAS No. :58435-22-6
Formula : C10H9NO5
M.W : 223.18
SMILES Code : O=C(O)/C=C/C1=CC=C(OC)C([N+]([O-])=O)=C1
MDL No. :MFCD03002875

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Application In Synthesis of [ 58435-22-6 ]

* 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 [ 58435-22-6 ]

[ 58435-22-6 ] Synthesis Path-Downstream   1~2

  • 1
  • [ 141-82-2 ]
  • [ 31680-08-7 ]
  • [ 58435-22-6 ]
YieldReaction ConditionsOperation in experiment
86% With piperidine; pyridine; In ethanol; for 18h;Reflux; General procedure: A stirred suspension of the appropriate benzaldehyde (10mmol), malonic acid (1.15g, 11mmol), pyridine (0.4mL) and piperidine (1.2mL, 12mmol, 1.2 equiv.) in EtOH (30mL) was heated to reflux for 18h. The solvent was removed under reduced pressure, the residue diluted with water (10mL) and acidified with hydrochloric acid in water (1N solution). The yellow precipitate obtained was filtered, washed with cold water, and dried to furnish the desired product as a solid used without further purification for the next reaction.5.1.2.1 (E)-3-(4-Methoxy-3-nitrophenyl)acrylic acid (21g) Following general procedure A, starting from <strong>[31680-08-7]4-methoxy-3-nitrobenzaldehyde</strong>, compound 21g was obtained as a yellow solid. Yield: 86%, mp: 234-236C. 1H NMR (DMSO-d6) δ: 3.96 (s, 3H), 6.56 (d, J=16.0, 1H), 7.37 (d, J=8.8Hz, 1H), 7.55 (d, J=16.0, 1H), 7.98 (dd, J=8.8 and 2.0Hz, 1H), 8.23 (d, J=2.0Hz, 1H), 12.6 (bs, 1H). MS (ESI): [M+1]+=224.3
86% With piperidine; pyridine; In ethanol; for 18h;Reflux; General procedure: A stirred suspension of the appropriate benzaldehyde (10mmol), malonic acid (1.15g, 11mmol), pyridine (0.4mL) and piperidine (1.2mL, 12mmol, 1.2 equiv.) in EtOH (30mL) was heated to reflux for 18h. The solvent was removed under reduced pressure, the residue diluted with water (10mL) and acidified with hydrochloric acid in water (1N solution). The yellow precipitate obtained was filtered, washed with cold water, and dried to furnish the desired product as a solid used without further purification for the next reaction.5.1.2.1 (E)-3-(4-Methoxy-3-nitrophenyl)acrylic acid (21g) Following general procedure A, starting from <strong>[31680-08-7]4-methoxy-3-nitrobenzaldehyde</strong>, compound 21g was obtained as a yellow solid. Yield: 86%, mp: 234-236C. 1H NMR (DMSO-d6) δ: 3.96 (s, 3H), 6.56 (d, J=16.0, 1H), 7.37 (d, J=8.8Hz, 1H), 7.55 (d, J=16.0, 1H), 7.98 (dd, J=8.8 and 2.0Hz, 1H), 8.23 (d, J=2.0Hz, 1H), 12.6 (bs, 1H). MS (ESI): [M+1]+=224.3
  • 2
  • [ 141-82-2 ]
  • [ 31680-08-7 ]
  • [ 58435-22-6 ]
YieldReaction ConditionsOperation in experiment
83.01% 4- methoxy-3-nitro-benzaldehyde (compound of Example 5; 1 .05 g, 5.79 mmol) and malonic acid (1 .32 g, 1 .27 mmol) were dissolved in pyridine (20 mL) under stirring and piperidine (1 mL) was added to the pyridine solution. The reaction mixture was heated at 75 C to 80 C for 3 h, after which the temperature was further increased to120 C and maintained at this temperature for 6 h. At the end of the reaction, pyridine was evaporated, followed by addition of aqueous HCI (1 :1 ) to obtain pH ~ 4. The solid obtained was filtered, washed with cold water and dried.Yield: 1 .0 g (83.01 %); 1 H NMR (DMSO-d6, 300 MHz): δ 12.37 (bs, 1 H), 8.22 (d, 1 H), 7.99 (dd, 1 H), 7.57 (d, 1 H), 7.37 (d, 1 H), 6.54 (d, 1 H), 3.94 (s, 3H); MS (ES-): 222 (M-1 ).
 

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