p-Toluenesulfonic acid → HCID 45256133, compound

HRID 553638Notes

Reaction equation

HRID 553638 reaction equation
[CH3:1][C:2]([C:12]1[CH:16]=[C:15]([NH:17][C:18](=[O:31])[C:19]([CH3:30])([S:21]([CH:24]2[CH2:29][CH2:28][O:27][CH2:26][CH2:25]2)(=[O:23])=[O:22])[CH3:20])[O:14][N:13]=1)([CH3:11])[CH2:3][O:4]C1CCCCO1.CC1C=CC(S(O)(=O)=O)=CC=1>C(Cl)Cl.C(O)C>[OH:4][CH2:3][C:2]([C:12]1[CH:16]=[C:15]([NH:17][C:18](=[O:31])[C:19]([CH3:30])([S:21]([CH:24]2[CH2:25][CH2:26][O:27][CH2:28][CH2:29]2)(=[O:23])=[O:22])[CH3:20])[O:14][N:13]=1)([CH3:11])[CH3:1]

Participants

4

Reactant 2

HCID 6101p-Toluenesulfonic acidHCID 45111496HCID 45111496, compound

Product 1

HCID 45256133HCID 45256133, compoundYield 82.7%

Reagents, catalysts & solvents 1

HCID 21584144Dichloromethane ethanolSolvent

Procedure

A solution of 98 g (0.21 mol) of N-{3-[1,1-dimethyl-2-(tetrahydro-pyran-2-yloxy)-ethyl]-isoxazol-5-yl}-2-methyl-2-(tetrahydro-pyran-4-sulfonyl)-propionamide in DCM/ethanol (1/1, 1.2 L) is treated with 129 g (0.42 mol) of MP-TsOH resin (loading 3.3 mmol/g) at room temperature for 18 h. The resin is removed by filtration and washed alternating with DCM (0.5 L) and methanol (0.5 L) twice. The combined filtrates are concentrated under reduced pressure and the resulting tan residue is slurried in heptanes/ethyl acetate (7/3, 4×1 L) to yield 65 g of N-[3-(2-hydroxy-1,1-dimethyl-ethyl)-isoxazol-5-yl]-2-methyl-2-(tetrahydro-pyran-4-sulfonyl)propionamide as a white powder. Yield 82%; ES-MS: m/z 375 [M+H], mp 191-192° C.

Workup

  1. customThe resin is removed by filtration
  2. washwashed
  3. concentrationThe combined filtrates are concentrated under reduced pressure

Sources & evidence

ORD record
ord-c6eb12ddc5ad42d995911d502430df58
Source dataset
uspto-grants-2011_11
Patent number
US08048899B2

Reaction notes

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