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Chemical Structure| 32846-64-3 Chemical Structure| 32846-64-3

Structure of 32846-64-3

Chemical Structure| 32846-64-3

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Product Details of [ 32846-64-3 ]

CAS No. :32846-64-3
Formula : C10H6Br2O2
M.W : 317.96
SMILES Code : O=C1C(Br)=CC2C(C3=O)(Br)C=CC3C12
MDL No. :MFCD05664459

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Application In Synthesis of [ 32846-64-3 ]

* 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 [ 32846-64-3 ]

[ 32846-64-3 ] Synthesis Path-Downstream   1~1

  • 1
  • [ 32846-64-3 ]
  • [ 32846-66-5 ]
YieldReaction ConditionsOperation in experiment
A solution of S4 (42.6 g, 134 mmol) and 32% aqueous hydrochloric acid (8.5 mL) in methanol (1.28 L) was saturated with argon (1 h) and irradiated for 40 h in a UV-B photoreactor (emission lambdamax ~313 nm, 192 W), through a Pyrex filter (reaction glassware). The solvent was reduced in vacuo and the wet solid suspended in H2O (640 mL). The suspension was heated at reflux for 1.5 h, and allowed to cool to rt. Sodium hydoxide (160 g, 4 mol, 30 equiv.) was added, and the mixture heated at reflux for 4.5 h. The solution was cooled to 0 C and then slowly poured onto a mixture of ice (850 g) and 32% aqueous hydrochloric acid (360 mL). The suspension was filtered, and the precipitate washed with H2O (100 mL). The filtrate was saturated with sodium chloride and extracted with hexanes-ethyl acetate (50:50, 3 × 150 mL). The combined extracts were dried (Na2SO4) and evaporated under reduced pressure. The obtained solid was triturated with ether and filtered. The combined product was dried in a vacuum oven (60 C, 120 mmHg) for 24 h to give crude S5 as a pale brown powder (19.8 g, 77%) possessing spectroscopic properties corresponding with those reported previously:4 deltaH (200 MHz; DMSO-d6)12.39 (2 H, br s), 4.10 (6 H, s, CH).
 

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