Potassium Carbonate → 197915-36-9

HRID 356560Notes

Reaction equation

HRID 356560 reaction equation
[OH:1][C:2]1[CH2:7][C:6]([CH2:14][CH2:15][C:16]2[CH:21]=[CH:20][CH:19]=[C:18]([OH:22])[CH:17]=2)([C:8]2[CH:13]=[CH:12][CH:11]=[CH:10][CH:9]=2)[O:5][C:4](=[O:23])[CH:3]=1.[C:24]([C:28]1[CH:33]=[C:32]([CH2:34][OH:35])[C:31]([CH3:36])=[CH:30][C:29]=1[S:37]S(C1C=CC(C)=CC=1)(=O)=O)([CH3:27])([CH3:26])[CH3:25].C([O-])([O-])=O.[K+].[K+]>CN(C=O)C>[C:24]([C:28]1[CH:33]=[C:32]([CH2:34][OH:35])[C:31]([CH3:36])=[CH:30][C:29]=1[S:37][C:3]1[C:4](=[O:23])[O:5][C:6]([CH2:14][CH2:15][C:16]2[CH:21]=[CH:20][CH:19]=[C:18]([OH:22])[CH:17]=2)([C:8]2[CH:9]=[CH:10][CH:11]=[CH:12][CH:13]=2)[CH2:7][C:2]=1[OH:1])([CH3:27])([CH3:26])[CH3:25]

Participants

5

Reactant 3

HCID 11430Potassium CarbonateHCID 10499026S-[2-Tert-butyl-4-(hydroxymethyl)-5-methylphenyl] 4-methylbenzenesulfonothioateHCID 54682293HCID 54682293, compound

Product 1

HCID 54682292197915-36-9

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

The title compound was prepared as described in General Method 9 using 4-hydroxy-6-[2-(3-hydroxy-phenyl)-ethyl]-6-phenyl-5,6-dihydro-pyran-2-one (0.155 g, 0.5 mmol) from Example UU, toluene-4-thiosulfonic acid S-(2-tert-butyl-4-hydroxymethyl-5-methyl-phenyl) ester (prepared in Example FFF; 0.2 g, 0.55 mmol), K2CO3 (0.27 g, 1.95 mmol), and DMF (3 mL). The solution was stirred overnight at room temperature, concentrated and the residue partitioned between 1N HC1 and EtOAc. The organic phase was dried (MgSO4), and concentrated. Purification by silica gel chromatography, eluting with MeOH:CHCl3 :hexane (5:90:10 to 10:90:10) gave the title compound, m.p. 132°-135° C. 1H NMR (DMSO-d6) δ 1.45 (s, 9 H), 1.76 (s, 3 H), 2.08-2.24 (m, 3 H), 2.48 (m, 1 H), 3.41 (dd, 2 H), 4.32 (s, 2 H), 4.91 (br s , 1 H), 6.17 (s, 1 H), 6.46-6.55 (m, 3 H), 7.02 (t, 1 H), 7.22 (s, 1 H), 7.35-7.46 (m, 5 H), 9.23 (s, 1 H) 12.15 (bs, 1 H).

Workup

  1. customThe title compound was prepared
  2. concentrationconcentrated
  3. customthe residue partitioned between 1N HC1 and EtOAc
  4. dry with materialThe organic phase was dried (MgSO4)
  5. concentrationconcentrated
  6. customPurification by silica gel chromatography
  7. washeluting with MeOH:CHCl3 :hexane (5:90:10 to 10:90:10)

Sources & evidence

ORD record
ord-21244e136e4f4ca68935f4fbbaf9415f
Source dataset
uspto-grants-1998_11
Patent number
US05834506

Reaction notes

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