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Chemical Structure| 88330-79-4 Chemical Structure| 88330-79-4

Structure of 88330-79-4

Chemical Structure| 88330-79-4

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Product Details of [ 88330-79-4 ]

CAS No. :88330-79-4
Formula : C12H12O4
M.W : 220.22
SMILES Code : O=C(OCC)/C(O)=C/C(C1=CC=CC=C1)=O
MDL No. :N/A

Safety of [ 88330-79-4 ]

GHS Pictogram:
Signal Word:Warning
Hazard Statements:H302-H315-H319-H335
Precautionary Statements:P261-P280-P301+P312-P302+P352-P305+P351+P338

Application In Synthesis of [ 88330-79-4 ]

* 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 [ 88330-79-4 ]

[ 88330-79-4 ] Synthesis Path-Downstream   1~2

  • 2
  • [ 88330-79-4 ]
  • [ 5932-30-9 ]
YieldReaction ConditionsOperation in experiment
84% With hydrogenchloride; hydrazine hydrate; In ethanol; water; at 20℃; Example 48 Ethyl 5-phenyl-1H-pyrazole-3-carboxylate To a solution of ethyl (Z)-2-hydroxy-4-oxo-4-phenylbut-2-enoate (1.02 g, 4.64 mmol) in ethanol (5 mL) was slowly added hydrazine monohydrate (0.29 mL, 4.64 mmol), followed by the addition of 1M HCl 0.3 mL. The reaction mixture was stirred overnight at room temperature. After the reaction was completed as monitored by TLC (Hexane:EtOAc=4:1), concentration in vacuo was conducted. The concentrate was extracted with dichloromethane and water, the organic layer thus formed was dried over anhydrous magnesium sulfate, filtered, and concentrated. The concentrated filtrate was recrystallized in dichloromethane and purified by column chromatography (dichloromethane:MeOH=15:1) to afford the title compound (843 mg, 84%, yellow solid). 1H NMR (300 MHz, CDCl3) δ 11.25 (brs, 1H), 7.80 (d, J=7.1 Hz, 2H), 7.50-7.38 (m, 3H), 7.16 (s, 1H), 4.45 (q, J=7.1 Hz, 2H), 1.45 (t, J=7.1 Hz, 3H)
 

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