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Chemical Structure| 475994-58-2 Chemical Structure| 475994-58-2

Structure of 475994-58-2

Chemical Structure| 475994-58-2

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Product Details of [ 475994-58-2 ]

CAS No. :475994-58-2
Formula : C9H6BrNO
M.W : 224.05
SMILES Code : BrC1C2C(=CC=[N+](C=2)[O-])C=CC=1
MDL No. :N/A

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Application In Synthesis of [ 475994-58-2 ]

* 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 [ 475994-58-2 ]

[ 475994-58-2 ] Synthesis Path-Downstream   1~1

  • 1
  • [ 63927-22-0 ]
  • [ 475994-58-2 ]
YieldReaction ConditionsOperation in experiment
85% With dihydrogen peroxide; acetic acid; In water; at 75℃; A solution of <strong>[63927-22-0]8-bromo-isoquinoline</strong> (prepared by the method [OF F.] T. Tyson, J. A. C. S. , 1939,61, 183) (1.25g, 6 mmol) in acetic acid (5 ml) was treated with 27percent aqueous hydrogen peroxide solution (1.8 ml) and heated at [75 OC] overnight. The mixture was evaporated and the residue partitioned between aqueous sodium carbonate solution and dichloromethane, re-extracting with dichloromethane twice more. The combined organic extracts were dried and evaporated. The residue was triturated with ether/petrol and isolated by filtration [(1.] 14g, [85percent).] MS (+ve ion electrospray) m/z 225 (MH+)
Example 8; To a cold (0 0C), stirred solution of 18 (3.34 g) in CHCI3 (35 ml_) was added mCPBA (5.54 g of 77percent) in one portion. The cold bath was removed and the mixture was stirred at RT for 3 h before being quenched with a saturated aqueous solution of Na2CO3. The organic layer was separated and the aqueous layer was extracted with CH2CI2 (2 x 30 ml_). The combined organic layers were dried over Mg2SO4, filtered, and concentrated under vacuum to yield A/-oxide 19 which was directly used in the next step without further purification.
With 3-chloro-benzenecarboperoxoic acid; In dichloromethane; at 20℃; for 2h; Preparation of <strong>[63927-22-0]8-bromoisoquinoline</strong> 2-oxide: (0531) [00225] To a solution of <strong>[63927-22-0]8-bromoisoquinoline</strong> (1 g, 4.806 mmol) in dichloromethane (30 mL) was added meta-chloroperbenzoic acid (mCPBA) (0.995 g, 5.76 mmol) and the reaction mixture was stirred at room temperature for 2 h. After completion of the reaction (monitored by TLC), the reaction mixture was diluted with dichloromethane (30 mL) and washed with 2M sodium hydroxide solution (2 x 30 mL). The aqueous layer was again extracted with dichloromethane (60 mL) and combined organic layer was dried over anhydrous sodium sulphate, filtered and concentrated to afford the title compound <strong>[63927-22-0]8-bromoisoquinoline</strong> 2-oxide (1.1 g, crude) as a brownish solid. Calculated (M+H): 223.96; Found (M+H): 223.9.
With dihydrogen peroxide; acetic acid; at 60℃; for 4h; S1. Prepare 8 g of <strong>[63927-22-0]8-bromoisoquinoline</strong>, 40 ml of acetic acid, and 25 ml of hydrogen peroxide at a concentration of 30percent. Select a 2L four-port bottle and place 40 ml of acetic acid into it while stirring.8 g of <strong>[63927-22-0]8-bromoisoquinoline</strong> was added slowly, followed by 25 ml of 30percent hydrogen peroxide, heated to 60° C., and reacted under reflux for 4 h, followed by TLC every 0.5 h until the reaction was complete.Cool the system to room temperature, slowly add 25ml of formaldehyde aqueous solution, after dropping, raise the temperature to 80°C, then slowly add 25ml of formaldehyde aqueous solution, then keep stirring.The presence of hydrogen peroxide was measured with a starch potassium iodide test paper while stirring until the starch potassium iodide test paper was no longer discolored, giving the S1 reaction mixture. S2, the S1 reaction mixture was reduced to room temperature, using vacuum concentrate to remove most of the solvent, add 80ml water, with 50percent aqueous NaOH concentration to adjust the pH to 12,The entire system was extracted with dichloromethane 4 times, each time using 150 ml, and the organic phase was dried and spin-dried to give the S2-step product <strong>[63927-22-0]8-bromoisoquinoline</strong> nitrogen oxide.

 

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