2-Mercaptoethanol → HCID 67824252, compound

HRID 1885222Notes

Reaction equation

HRID 1885222 reaction equation
O[CH:2]1[C:8]2[CH:9]=[C:10]([C:13]([O:15][CH3:16])=[O:14])[CH:11]=[CH:12][C:7]=2[CH2:6][CH2:5][C:4]2[CH:17]=[CH:18][CH:19]=[CH:20][C:3]1=2.FC(F)(F)C(OC(=O)C(F)(F)F)=O.[SH:34][CH2:35][CH2:36][OH:37]>C(Cl)Cl>[OH:37][CH2:36][CH2:35][S:34][CH:2]1[C:8]2[CH:9]=[C:10]([C:13]([O:15][CH3:16])=[O:14])[CH:11]=[CH:12][C:7]=2[CH2:6][CH2:5][C:4]2[CH:17]=[CH:18][CH:19]=[CH:20][C:3]1=2

Participants

5

Reactant 3

HCID 15672-MercaptoethanolHCID 9845Trifluoroacetic anhydrideHCID 10423156HCID 10423156, compound

Product 1

HCID 67824252HCID 67824252, compound

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent2×

Procedure

In 15.3 ml of methylene chloride was suspended 0.51 g of methyl 5-hydroxy-10,11-dihydro-5H-dibenzo[a,d]cyclohepten-3-carboxylate. Under ice cooling, 0.27 ml of trifluoroacetic anhydride was added to the suspension followed by stirring at room temperature for an hour. Then, 0.14 ml of 2-mercaptoethanol was added to the mixture followed by stirring for further an hour. After 10 ml of methylene chloride was added to the reaction mixture, the mixture was washed with saturated aqueous sodium chloride solution. After drying over anhydrous magnesium sulfate, the solvent was distilled off under reduced pressure. The obtained residue was purified by silica gel column chromatography (eluent; hexane:ethyl acetate=1:1) and recrystallized from toluene to give 0.51 g of the objective compound as light yellow crystals.

Workup

  1. stirringby stirring for further an hour
  2. washthe mixture was washed with saturated aqueous sodium chloride solution
  3. dry with materialAfter drying over anhydrous magnesium sulfate
  4. distillationthe solvent was distilled off under reduced pressure
  5. customThe obtained residue was purified by silica gel column chromatography (eluent; hexane:ethyl acetate=1:1)
  6. customrecrystallized from toluene

Sources & evidence

ORD record
ord-98b2f9a10ccc4650925e41a76e912f58
Source dataset
uspto-grants-1992_09
Patent number
US05143922

Reaction notes

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