Triethylamine → Toluene-4-thiosulfonic acid S-(2-tert-butyl-4-tert-butylsulfamoyloxy-5-methyl-phenyl) ester

HRID 356512Notes

Reaction equation

HRID 356512 reaction equation
[C:1]([C:5]1[CH:10]=[C:9]([OH:11])[C:8]([CH3:12])=[CH:7][C:6]=1[S:13][S:14]([C:17]1[CH:22]=[CH:21][C:20]([CH3:23])=[CH:19][CH:18]=1)(=[O:16])=[O:15])([CH3:4])([CH3:3])[CH3:2].CCN(CC)CC.[C:31]([NH:35][S:36](Cl)(=[O:38])=[O:37])([CH3:34])([CH3:33])[CH3:32]>CCOCC>[C:1]([C:5]1[CH:10]=[C:9]([O:11][S:36](=[O:38])(=[O:37])[NH:35][C:31]([CH3:34])([CH3:33])[CH3:32])[C:8]([CH3:12])=[CH:7][C:6]=1[S:13][S:14]([C:17]1[CH:22]=[CH:21][C:20]([CH3:23])=[CH:19][CH:18]=1)(=[O:15])=[O:16])([CH3:4])([CH3:3])[CH3:2]

Participants

5

Reactant 3

HCID 8471Triethylamine2×HCID 10521842Toluene-4-thiosulfonic acid S-(2-tert-butyl-4-hydroxy-5-methyl-phenyl) esterHCID 12682606N-tert-butylsulfamoyl chloride2×

Product 1

HCID 54445851Toluene-4-thiosulfonic acid S-(2-tert-butyl-4-tert-butylsulfamoyloxy-5-methyl-phenyl) ester

Reagents, catalysts & solvents 1

HCID 3283Diethyl EtherSolvent3×

Conditions

Temperature
0 °C

Procedure

To a round bottom flask equipped with a magnetic stirrer were added 1.10 g (3.20 mmol) of toluene-4-thiosulfonic acid S-(2-tert-butyl-4-hydroxy-5-methyl-phenyl) ester (prepared in Example RRR), Et2O (50 mL), and 0.90 mL (6.40 mmol) of NEt3, in that order. The solution was cooled to 0° C. To this solution was rapidly added a solution of 1.10 g (6.40 mmol) of (tert-butyl amino)sulfonyl chloride (Matler, W. L., Comer, W. T., and Deitchman, D., Journal of Medicinal Chemistry, 1972, 15 (5), 538-541) in Et2O (10 mL). A precipitate ensued and the reaction was allowed to stir for 30 minutes. Another two equivalents of (tert-butyl amino)sulfonyl chloride (1.10 g, 6.40 mmol) in Et2O (10 mL) and NEt3 (0.90 mL, 6.40 mmol) were added, and the reaction mixture was stirred for another 30 minutes. The reaction was quenched with brine and the organics extracted with Et2O. The organics were dried (MgSO4) and concentrated. The residue was submitted to flash chromatography (EtOAc:CHCl3 1:9) to yield the title compound. 1H NMR (CDCl3) δ 1.23 (s, 9 H), 1.46 (s, 9 H), 2.25 (s, 3 H), 2.42 (s, 3 H), 4.63 (br s, 1 H), 7.23 (s, 1 H), 7.26 (s, obscured by CDCl3, 1 H), 7.42 (d, 2 H), 7.46 (d, 2 H).

Workup

  1. customTo a round bottom flask equipped with a magnetic stirrer
  2. stirringthe reaction mixture was stirred for another 30 minutes
  3. customThe reaction was quenched with brine
  4. extractionthe organics extracted with Et2O
  5. dry with materialThe organics were dried (MgSO4)
  6. concentrationconcentrated

Sources & evidence

ORD record
ord-c3f9826afbba43e2bb3baa327350639c
Source dataset
uspto-grants-1998_11
Patent number
US05834506

Reaction notes

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