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Chemical Structure| 954124-21-1 Chemical Structure| 954124-21-1

Structure of 954124-21-1

Chemical Structure| 954124-21-1

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Product Details of [ 954124-21-1 ]

CAS No. :954124-21-1
Formula : C11H10N2O4
M.W : 234.21
SMILES Code : O=C(CC(C1=CC=C([N+]([O-])=O)C=C1)C2)NC2=O
MDL No. :MFCD11111095

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Application In Synthesis of [ 954124-21-1 ]

* 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 [ 954124-21-1 ]

[ 954124-21-1 ] Synthesis Path-Downstream   1~3

  • 1
  • [ 92289-14-0 ]
  • [ 57-13-6 ]
  • [ 954124-21-1 ]
YieldReaction ConditionsOperation in experiment
61% at 160℃; for 1h; General procedure: 3-Phenylpentanedioic acid (5) (5.00 g, 24.01 mmol) and urea (3.60 g, 59.94 mmol) were mixed and heated at 160 C for 1 h. After being cooled, the reaction mixture was poured into water (20 mL). The solid was filtered off, washed with water and dried. Recrystallization from toluene gave 9 (3.26 g, 72%) as a white powder: mp 173-174 C; IR (KBr) cm-1 3184 (NH), 1734, 1686 (CO); 1H NMR (DMSO-d6) δ 10.86 (br s, 1H, NH which exchanges with D2O), 7.42-7.18 (m, 5H, aromatic), 3.50-3.35 (m, 1H, CH), 2.90-2.43 (m, 4H, CH2). Anal. (C11H11NO2) calcd: C 69.83, H 5.86, N 7.40; found: C 69.71, H 5.83, N 7.29.
22% at 150℃; for 0.666667h;Product distribution / selectivity; h) 4-(4-Nitro-phenyl)-piperidine-2,6-dione A mixture of 250 mg (0.987 mmol) of 3-(4-nitro-phenyl)-pentanedioic acid (as prepared in the previous step) and 119 mg (1.98 mmol) of urea was heated to 150 C. for 40 min (until all solid melted and gas evolution stopped). The mixture was cooled to RT, taken up in EtOAc (70 mL), washed with saturated aqueous NaHCO3 (2*40 mL), dried (MgSO4), and concentrated in vacuo to afford 52.0 mg (22%) of the title compound as a brown solid: 1H-NMR (CDCl3; 400 MHz): δ 8.28 (d, 2H, J=8.8 Hz), 7.44 (d, 2H, J=8.8 Hz), 3.64-3.54 (m, 1H), 3.04-2.96 (m, 2H), 2.86-2.76 (m, 2H).
  • 2
  • [ 92289-14-0 ]
  • [ 79-22-1 ]
  • [ 954124-21-1 ]
YieldReaction ConditionsOperation in experiment
43% Alternatively, the title compound can be obtained in the following manner: A solution of 500 mg (1.97 mmol) of 3-(4-nitro-phenyl)-pentanedioic acid (as prepared in the previous step) in 50 mL dioxane was cooled to 10 C. and treated with 229 μL (2.96 mmol) of methyl chloroformate and 936 μL (6.71 mmol) of triethylamine for 7.2 h. A solution of 0.5 M ammonia in dioxane (15.8 mL, 7.90 mmol) was added at 10 C. and the mixture stirred at RT for 72 h. The mixture was filtered through Celite, the filter cake washed with EtOAc, and the solvents were evaporated in vacuo. The residue was treated with solid 1.30 g (15.8 mmol) of NaOAc and acetic anhydride (4 mL) and heated to 100 C. for 1 h. The mixture was cooled to RT and concentrated to half the original volume. The residue was taken up in EtOAc (100 mL), washed with saturated aqueous NaHCO3 (1×75 mL), brine (1×75 mL), and water (1×75 mL). The organic layer was dried (MgSO4) and concentrated in vacuo. Silica gel chromatography of the residue on a 50-g Varian MegaBond Elut SPE column with 50-60% EtOAc-hexane afforded 197 mg (43%) of the title compound as an off-white solid (see spectrum above).
 

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