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Chemical Structure| 87129-32-6 Chemical Structure| 87129-32-6

Structure of 87129-32-6

Chemical Structure| 87129-32-6

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Product Details of [ 87129-32-6 ]

CAS No. :87129-32-6
Formula : C13H18O4
M.W : 238.28
SMILES Code : C[C@@H](OC1=CC=C(O)C=C1)C(OCCCC)=O
MDL No. :MFCD12911579

Safety of [ 87129-32-6 ]

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 [ 87129-32-6 ]

* 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 [ 87129-32-6 ]

[ 87129-32-6 ] Synthesis Path-Downstream   1~2

  • 1
  • [ 94050-90-5 ]
  • [ 71-36-3 ]
  • [ 87129-32-6 ]
YieldReaction ConditionsOperation in experiment
99.2% With sulfuric acid; In toluene; at 85 - 108℃; for 4h; 600 mL of toluene was placed in a 1500 mL four-necked flask.<strong>[94050-90-5](R)-2-(4-hydroxyphenoxy)propionic acid</strong> 367.6 g (2.0 mol),224.2 g (3.0 mol) of n-butanol, 36.8 g of concentrated sulfuric acid catalyst, stirring,Then the temperature is raised to 85-90 C, and the reaction is kept for 4 hours.Continue to raise the temperature to 105-108 C, extract a mixture of excess n-butanol and toluene, sample HPLC analysis, to <strong>[94050-90-5](R)-2-(4-hydroxyphenoxy)propionic acid</strong> <0.3%,The reaction is over. Reduce to room temperature, add 150 mL of water to wash, and let stand for stratification.Wash again with 100 mL of water, desolvate to dryness,Get oil,That is, 473.0 g of <strong>[94050-90-5]R-(+)-2-(4-hydroxyphenoxy)propionic acid</strong> butyl ester, yield: 99.2%, content: 99.1%, optical 99.4%.
  • 2
  • [ 109-65-9 ]
  • [ 94050-90-5 ]
  • [ 87129-32-6 ]
YieldReaction ConditionsOperation in experiment
With potassium carbonate; ammonium bromide; In N,N-dimethyl-formamide; toluene; at 85℃; for 7h; Into the 500 ml reaction flask, place 40 g <strong>[94050-90-5](R)-2-(4-hydroxyphenoxy)propionic acid</strong> and 0.5 g ammonium bromide, and add 100 ml dimethyl formamide DMF and 50 ml toluene as solvent to dissolve it. After slowly adding potassium carbonate 70.7 g. After waiting for the reaction flask to not generate gas, add 30.5 g bromobutane. After 85 C reaction 7 hours, add 31 g 3,4-difluorobenzonitrile react for 5 h, then filtered and the filtrate, and 50 ml toluene after washing with the filtrate after the merger of the desolvation, drying the obtained cyhalofop 75.2 g, total reaction yield is 95.7%, the appearance is a white solid.
 

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