Indole → HCID 68004074, compound

HRID 1621269Notes

Reaction equation

HRID 1621269 reaction equation
[NH:1]1[C:9]2[C:4](=[CH:5][CH:6]=[CH:7][CH:8]=2)[CH:3]=[CH:2]1.[C:10]([O:14][CH3:15])(=[O:13])[CH2:11][SH:12].II.[I-].[K+]>CO.O>[NH:1]1[C:9]2[C:4](=[CH:5][CH:6]=[CH:7][CH:8]=2)[C:3]([S:12][CH2:11][C:10]([O:14][CH3:15])=[O:13])=[CH:2]1

Participants

7

Reactant 4

HCID 798IndoleHCID 807IodineHCID 4875Potassium IodideHCID 16907Methyl Thioglycolate

Product 1

HCID 68004074HCID 68004074, compound

Reagents, catalysts & solvents 2

HCID 887MethanolSolventHCID 962WaterSolvent

Procedure

To a solution of indole (3.00 g, 25.6 mmol) and methyl thioglycolate (2.40 mL, 25.6 mmol) in methanol:water (80 mL:20 mL) was added iodine (6.50 g, 25.6 mmol) and potassium iodide (4.25 g, 25.6 mmol). The reaction mixture was stirred at ambient temperature for 60 hours. Methanol was removed in vacuo and the aqueous layer diluted with a saturated solution of sodium bicarbonate and extracted with ethyl acetate. The organic layer was dried over magnesium sulfate, evaporated in vacuo and the resulting residue was purified on a silica gel column (0-100% ethyl acetate:hexanes over 33 min) to afford the desired product. LCMS>99% at 254 nm, RT=1.29 min, m/z=222 (M+1).

Workup

  1. customMethanol was removed in vacuo
  2. additionthe aqueous layer diluted with a saturated solution of sodium bicarbonate
  3. extractionextracted with ethyl acetate
  4. dry with materialThe organic layer was dried over magnesium sulfate
  5. customevaporated in vacuo
  6. customthe resulting residue was purified on a silica gel column (0-100% ethyl acetate:hexanes over 33 min)

Sources & evidence

ORD record
ord-d09a43425dc143e8a1096a27ea59f413
Source dataset
uspto-grants-2014_07
Patent number
US08772509B2

Reaction notes

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