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Chemical Structure| 183303-75-5 Chemical Structure| 183303-75-5

Structure of 183303-75-5

Chemical Structure| 183303-75-5

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Product Details of [ 183303-75-5 ]

CAS No. :183303-75-5
Formula : C7H8N2O2S
M.W : 184.22
SMILES Code : O=C(C1=C(C2CC2)N=NS1)OC
MDL No. :MFCD19981415

Safety of [ 183303-75-5 ]

GHS Pictogram:
Signal Word:Warning
Hazard Statements:H302
Precautionary Statements:P264-P270-P301+P312-P330

Application In Synthesis of [ 183303-75-5 ]

* 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 [ 183303-75-5 ]

[ 183303-75-5 ] Synthesis Path-Downstream   1~1

  • 1
  • [ 6294-89-9 ]
  • [ 32249-35-7 ]
  • [ 183303-75-5 ]
YieldReaction ConditionsOperation in experiment
70% Production of methyl 4-cyclopropyl-1,2,3-thiadiazole-5-carboxylate Methyl 3-cyclopropyl-3-oxopropionate (10 g; 70 mmols) was dissolved in methanol (100 ml), and methyl carbazinate (6.3 g; 70 mmols) and p-toluenesulfonic acid (20 mg; 0.11 mol) were added thereto. After stirring the mixture overnight, methanol was evaporated under reduced pressure. Subsequently, toluene (10 ml) was added thereto, and thionyl chloride (20 ml) was gradually added dropwise thereto under cooling in an ice-bath. After completion of the dropwise addition, the mixture was stirred for 4 hours at room temperature, then poured onto ice to stop the reaction, and neutralized with sodium hydrogencarbonate. After extracting with ethyl acetate and washing with a saturated sodium chloride aqueous solution, the solution was dried over anhydrous sodium sulfate. After the mixture was concentrated under reduced pressure, the residue was purified by silica gel column chromatography (hexane: ethyl acetate = 10:1) to thereby obtain 9 g of methyl 4-cyclopropyl-1,2,3-thiadiazole-5-carboxylate. Yield: 70% Physical properties: mp. 47C
 

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