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Chemical Structure| 163666-81-7 Chemical Structure| 163666-81-7

Structure of 163666-81-7

Chemical Structure| 163666-81-7

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Product Details of [ 163666-81-7 ]

CAS No. :163666-81-7
Formula : C5H7IO3
M.W : 242.01
SMILES Code : O=C(OC)/C(I)=C/OC

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Application In Synthesis of [ 163666-81-7 ]

* 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 [ 163666-81-7 ]

[ 163666-81-7 ] Synthesis Path-Downstream   1~1

  • 1
  • [ 34846-90-7 ]
  • [ 163666-81-7 ]
YieldReaction ConditionsOperation in experiment
With N-iodo-succinimide; acetic acid; triethylamine; In di-isopropyl ether; Preparation 1 methyl 2-iodo 3-methoxy 2-propenoate A solution containing 12.95 g of methyl 3-methoxy 2-propenoate and 50 ml ofacetic acid is introduced into a solution containing 37 g of N-iodosuccinimide and 150 ml of acetic acid. The reaction medium is agitated for 4 hours at ambient temperature. It is concentrated under reduced pressure and taken up in isopropyl ether. Filtration and rinsing with isopropyl ether are carried out. After concentrating and taking up inmethylene chloride, a sufficient quantity of triethylamine is added to ensure the conversion to the acrylic derivative. After washing, drying andconcentrating, an oil is obtained which crystallizes spontaneously at ambient temperature. The crystals obtained are recrystallized from isopropanol. 17 g of desired product is obtained melting at 50.9° C.
30.5 g A mixture of methyl-3-methoxypropenoate, 37-f, (13.92 g, 120 mmol), N- iodosuccinimid (32g, 140mmol), glacial acetic acid (18 mL, 240 mmol), and dichloromethane(150 mL) was stirred at room temperature for 24h. Triethylamine (50 mL, 36 mmol) was added, and the reaction mixture was stirred at room temperature for 12h before water was added. The organic layer was separated and the aqueous layer was extracted with dichloromethane. The combined organic extracts were washed with saturated aqueous sodium thiosulfate, saturated aqueous sodium bicarbonate, and water, and were dried over anhydrous sodium sulfate and concentrated. The residue was purified by flash chromatography (PE:EA=1 :5) to afford compound, 37-g (30.5 g, crude) . 1H NMR (300 MHz, CDCI3) delta 7.69 (s, 1H), 4.01 (s, 3H), 3.80 (s, 3H); LC-MS (ESI): 243 [M+H]+
 

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