Hydrochloric Acid → HCID 3170441, compound

HRID 1770428Notes

Reaction equation

HRID 1770428 reaction equation
[CH2:1]([N:8]([CH2:28][C:29]1[CH:34]=[CH:33][C:32]([O:35][CH3:36])=[CH:31][CH:30]=1)[S:9]([C:12]1[CH:27]=[CH:26][C:15]([C:16]([O:18]CC2C=CC=CC=2)=[O:17])=[CH:14][CH:13]=1)(=[O:11])=[O:10])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.[OH-].[Na+].Cl>C1COCC1.CO>[CH2:1]([N:8]([CH2:28][C:29]1[CH:34]=[CH:33][C:32]([O:35][CH3:36])=[CH:31][CH:30]=1)[S:9]([C:12]1[CH:27]=[CH:26][C:15]([C:16]([OH:18])=[O:17])=[CH:14][CH:13]=1)(=[O:11])=[O:10])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1

Participants

5

Reactant 3

HCID 313Hydrochloric AcidHCID 14798Sodium HydroxideHCID 57422332HCID 57422332, compound

Product 1

HCID 3170441HCID 3170441, compoundYield 42.3%

Reagents, catalysts & solvents 1

HCID 21899815MeOH tetrahydrofuranSolvent

Procedure

Benzyl 4-(N-benzyl-N-(4-methoxybenzyl)sulfamoyl)benzoate (Example 5-1a) (517 mg, 1 mmol) was stirred a 10/1/2 solution of 6N NaOH(aq)/THF/MeOH (27 mL) at ambient temperature for 6 hours. The solution was acidified with 3N HCl (aq) to a pH of ˜3 (ca. 50 mL), and the aqueous phase was extracted with ethyl acetate (3×, 75 mL). The combined organic extracts were dried over sodium sulfate and concentrated on the rotovap. The residue was taken up in MeOH (15 mL) and purified by reverse phased HPLC (5-95% acetonitrile in H2O gradient: 25 minutes) in three 5 mL aliquots. The pure fractions were combined and concentrated to a white solid. The product was dissolved in 15 mL of absolute ethanol and evaporated on the rotovap (4×) to provide pure 4-(N-benzyl-N-(4-methoxybenzyl)sulfamoyl)benzoic acid (174 mg, 42%) as a white solid. M.p 161-163° C. 1H NMR (CDCl3, 400 MHz): 8, 3.78 (s, 3H), 4.32 (s, 2H), 4.36 (s, 2H), 6.78 (d, J=8.4 Hz, 2H), 6.99 (d, J=8.8 Hz, 2H), 709-7.07 (m, 2H), 7.27-7.24 (m, 3H), 7.93 (d, J=8.8 Hz, 2H), 8.24 (d, J=8 Hz, 2H). MS 412 (MH+).

Workup

  1. extractionthe aqueous phase was extracted with ethyl acetate (3×, 75 mL)
  2. dry with materialThe combined organic extracts were dried over sodium sulfate
  3. concentrationconcentrated on the rotovap
  4. custompurified by reverse
  5. customHPLC (5-95% acetonitrile in H2O gradient: 25 minutes)
  6. concentrationconcentrated to a white solid
  7. dissolutionThe product was dissolved in 15 mL of absolute ethanol
  8. customevaporated on the rotovap (4×)

Sources & evidence

ORD record
ord-2a9a2a45a9424d728edfa1a79ec9dd05
Source dataset
uspto-grants-2016_02
Patent number
US09247759B2

Reaction notes

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