4-Toluenesulfonyl chloride → HCID 86600861, compound

HRID 1869244Notes

Reaction equation

HRID 1869244 reaction equation
[N:1]1([CH:10]([C:15]2[CH:20]=[CH:19][CH:18]=[CH:17][CH:16]=2)[CH:11]([OH:14])[CH2:12][OH:13])[C:9]2[C:4](=[CH:5][CH:6]=[CH:7][CH:8]=2)[CH:3]=[CH:2]1.[C:21]1([CH3:31])[CH:26]=[CH:25][C:24]([S:27](Cl)(=[O:29])=[O:28])=[CH:23][CH:22]=1>N1C=CC=CC=1.O>[OH:14][CH:11]([CH:10]([N:1]1[C:9]2[C:4](=[CH:5][CH:6]=[CH:7][CH:8]=2)[CH:3]=[CH:2]1)[C:15]1[CH:20]=[CH:19][CH:18]=[CH:17][CH:16]=1)[CH2:12][O:13][S:27]([C:24]1[CH:25]=[CH:26][C:21]([CH3:31])=[CH:22][CH:23]=1)(=[O:29])=[O:28]

Participants

5

Reactant 2

HCID 73974-Toluenesulfonyl chlorideHCID 23555938HCID 23555938, compound

Product 1

HCID 86600861HCID 86600861, compoundYield 69.1%

Reagents, catalysts & solvents 2

HCID 962WaterSolventHCID 1049PyridineSolvent

Procedure

A solution of (2RS,3RS)-3-indol-1-yl-3-phenyl-propane-1,2-diol (1.83 g, 6.8 mmol) and p-toluenesulfonyl chloride (1.31 g, 6.8 mmol) in anhydrous pyridine (10 mL) was stirred at room temperature under nitrogen for 15 hours. The mixture was then diluted with water (10 mL), quenched with a 2N aqueous solution of hydrochloric acid in an ice/water bath until the solution was pH=3, and extracted with dichloromethane. The organic layer was washed with water again, dried over anhydrous sodium sulfate, filtered, and concentrated. The residue was purified via Biotage chromatography (FlasH40i, silica, 10%, 25% EtOAc/hexane) to yield 1.98 g (69%) of (2RS,3RS)-toluene-4-sulfonic acid 2-hydroxy-3-indol-1-yl-3-phenyl-propyl ester as a white solid. 1HNMR (DMSO): δ3.70 and δ3.85 (dd and dd, 2H, CH2OTs), δ4.80 (m, 1H, CHOH), δ5.52 (d, 1H, CHPh), δ5.82 (d, 1H, CHOH); MS (ESI) m/z 422 ([M+H]+).

Workup

  1. customquenched with a 2N aqueous solution of hydrochloric acid in an ice/water bath until the solution
  2. extractionextracted with dichloromethane
  3. washThe organic layer was washed with water again
  4. dry with materialdried over anhydrous sodium sulfate
  5. filtrationfiltered
  6. concentrationconcentrated
  7. customThe residue was purified via Biotage chromatography (FlasH40i, silica, 10%, 25% EtOAc/hexane)

Sources & evidence

ORD record
ord-ab9f60fb0e594071b0927405f3b91b88
Source dataset
uspto-grants-2009_12
Patent number
US07638512B2

Reaction notes

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