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Structure of 75178-16-4

Chemical Structure| 75178-16-4

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Product Details of [ 75178-16-4 ]

CAS No. :75178-16-4
Formula : C12H15NO3
M.W : 221.25
SMILES Code : CC(OCCC1=CC=C(NC(C)=O)C=C1)=O
MDL No. :MFCD18431772

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Application In Synthesis of [ 75178-16-4 ]

* 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 [ 75178-16-4 ]

[ 75178-16-4 ] Synthesis Path-Downstream   1~2

  • 1
  • [ 75178-16-4 ]
  • [ 83345-11-3 ]
  • 2
  • [ 83345-11-3 ]
  • [ 155164-63-9 ]
  • [ 75178-16-4 ]
YieldReaction ConditionsOperation in experiment
93% In neat (no solvent); at 100℃; for 0.166667h;Sealed tube; Green chemistry; General procedure: Alcohol(1, 5.31 mmol, 1 equiv.) and 2-acylpyridazin-3(2H)-ones (2,6.37 mmol, 1.2 equiv.) were placed in a culture tube (Pyrexbrand 9825 culture tube with screw cap), sealed, and heatedto 100 C. The resulting mixture was kept at this temperatureuntil 1 disappeared (as determined by TLC analysis). Aftercooling of the tube, dichloromethane (5-6 mL) was added tothe mixture with stirring until the reaction mixture wasdissolved. After removing 4,5-dichloropyridazin-3(2H)-oneby filtration, the resulting filtrate was evaporated underreduced pressure. The resulting residue was further purifiedby silica gel column chromatography to give the correspondingesters 3.
86% In tetrahydrofuran; at 150℃; under 10336.0 Torr; for 0.08333330000000001h;Microwave irradiation; General procedure: Alcohol (2 or 5, 5.31 mmol, 1 equiv) and 2-acylpyridazin-3(2H)-ones (1k or 4, 6.37 mmol, 1.2 equiv) were placed in a capped vial without solvent or in the presence of tetrahydrofuran (5 mL, 6f and 6g) at room temperature. The resulting mixture was irradiated in aMWoven (300Woutput,1378 kPa) at 150 C for 5 min, until 1k or 4 was consumed. The reaction was monitored by TLC. After cooling Phenyl acetate (3) of the reaction vial, the product was extracted with dichloromethane (6 mL). The reaction mixture was filtered, and the resultant filtrate was evaporated under reduced pressure. The resulting residue was purified further by silica gel column chromatography to give the corresponding esters 3 and 6 4-Acetamidophenethyl acetate (6a) Yield: 276 mg, 86%. White solid. Mp 96-98 C (lit. 13 mp 95 C). IR (KBr, CH2Cl2) 3293, 3186, 3119, 3061, 2952, 2928, 2885, 1732, 1663, 1603, 1534, 1408, 1368, 1315, 1262, 1034, 835, 753 cm-1. 1H NMR (300 MHz, CDCl3) δ 2.03 (s, 3H), 2.15 (s, 3H), 2.89 (t, 2H, J1 and J2=7.0 Hz), 4.24 (t, 2H, J1 and J2=7.0 Hz), 7.15 (d, 2H, J=8.37 Hz), 7.43 (d, 2H, J=8.41 Hz), 7.55 (br s, 1H, D2O exchangeable). 13C NMR (75 MHz, CDCl3) δ 20.97, 24.50, 34.48, 54.91, 120.12, 129.38, 133.75, 136.50, 168.46, 171.11. HRMS (m/z): [M]+ calcd for C12H15NO3 221.1052. Found: 221.1056.
 

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