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Chemical Structure| 7333-51-9 Chemical Structure| 7333-51-9

Structure of 7333-51-9

Chemical Structure| 7333-51-9

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Product Details of [ 7333-51-9 ]

CAS No. :7333-51-9
Formula : C24H26BrP
M.W : 425.34
SMILES Code : C1([P+](C2=CC=CC=C2)(C3CCCCC3)C4=CC=CC=C4)=CC=CC=C1.[Br-]
MDL No. :MFCD00031667

Safety of [ 7333-51-9 ]

GHS Pictogram:
Signal Word:Warning
Hazard Statements:H302-H315-H319-H335
Precautionary Statements:P261-P305+P351+P338

Application In Synthesis of [ 7333-51-9 ]

* 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 [ 7333-51-9 ]

[ 7333-51-9 ] Synthesis Path-Downstream   1~1

  • 1
  • [ 21512-16-3 ]
  • [ 7333-51-9 ]
  • [ 134135-41-4 ]
  • (5-cyano-thien-2-yl)methylphosphonic acid diethyl ester [ No CAS ]
YieldReaction ConditionsOperation in experiment
With n-butyllithium; triethyl phosphite; In hexane; The corresponding phosphorane is produced from 3 g of cyclohexyltriphenylphosphonium bromide in 80 ml of ether by dropwise addition of 4.5 ml of a 1.5-molar solution of butyllithium in hexane at room temperature. To this product is added dropwise 1 g of 5-cyanothiophene-2-aldehyde in 45 ml of ether. After 16 hours of agitation at room temperature, a precipitate is suctioned off, and the filtrate is concentrated by evaporation. The residue is recrystallized from isopropanol, thus obtaining 610 mg of the title compound (b) (1), mp 98-100°. In a second process, 20 g of 5-bromomethyl-thiophene-2-carbonitrile is heated with 200 ml of triethyl phosphite for 4 hours to 150°. Then triethyl phosphite is removed at 40°-60°/0.06 mbar, and the residue is distilled on a bulb tube at 130°-150°/0.004 mbar, resulting in 24 g of (5-cyano-2-thienyl)methylphosphonic acid diethyl ester.
 

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