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Chemical Structure| 69464-39-7 Chemical Structure| 69464-39-7

Structure of 69464-39-7

Chemical Structure| 69464-39-7

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Product Details of [ 69464-39-7 ]

CAS No. :69464-39-7
Formula : C9H9BrO2
M.W : 229.07
SMILES Code : CC1=C2C(OCCO2)=CC=C1Br
MDL No. :MFCD16621818

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Application In Synthesis of [ 69464-39-7 ]

* 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 [ 69464-39-7 ]

[ 69464-39-7 ] Synthesis Path-Downstream   1~1

  • 1
  • [ 69464-39-7 ]
  • 5-methyl-l,4-benzodioxan-6-carboxylic acid [ No CAS ]
  • [ 143809-21-6 ]
YieldReaction ConditionsOperation in experiment
77% With n-butyllithium; In tetrahydrofuran; water; SYNTHETIC EXAMPLE 7 Production of 5-methyl-l,4-benzodioxan-6-carboxylic acid In 300 ml of dry tetrahydrofuran, was dissolved 32.0 g of 6-bromo-5-methyl-1,4-benzodioxane and after cooling the solution to -78 C., 96.7 ml of n-butyl lithium (n-hexane solution) was added dropwise over 20 minutes or more. After stirring at the same temperature for 1.5 hours, the reaction mixture was poured onto crushed dry ice and dry ice was sublimated while stirring. Water was added to the mixture and the tetrahydrofuran was removed under reduced pressure. The resulting alkaline aqueous solution was washed with methylene chloride and adjusted to pH 3 with a 5% hydrochloric acid, and the precipitated crystals were collected by filtration and dried to obtain 20.9 g of 5-methyl-1, 4-benzodioxan-6-carboxylic acid (yield: 77%). 1 H-NMR (CDCl3) delta(ppm): 2.51 (3H, s), 4.29 (4H, s), 6.76 (1H, d, J=9.9Hz), 7.62 (1H, d, J=9.9Hz), 11.98 (1H, brs).
 

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