Water → Tezacaftor

HRID 1991905Notes

Reaction equation

HRID 1991905 reaction equation
[F:1][C:2]1([F:40])[O:6][C:5]2[CH:7]=[CH:8][C:9]([C:11]3([C:14]([NH:16][C:17]4[CH:18]=[C:19]5[C:23](=[CH:24][C:25]=4[F:26])[N:22]([CH2:27][C@@H:28]4[CH2:32][O:31]C(C)(C)[O:29]4)[C:21]([C:35]([CH3:39])([CH3:38])[CH2:36][OH:37])=[CH:20]5)=[O:15])[CH2:13][CH2:12]3)=[CH:10][C:4]=2[O:3]1.O.CC1C=CC(S(O)(=O)=O)=CC=1.O>CO>[F:40][C:2]1([F:1])[O:6][C:5]2[CH:7]=[CH:8][C:9]([C:11]3([C:14]([NH:16][C:17]4[CH:18]=[C:19]5[C:23](=[CH:24][C:25]=4[F:26])[N:22]([CH2:27][C@@H:28]([OH:29])[CH2:32][OH:31])[C:21]([C:35]([CH3:38])([CH3:39])[CH2:36][OH:37])=[CH:20]5)=[O:15])[CH2:12][CH2:13]3)=[CH:10][C:4]=2[O:3]1

Participants

5

Reactant 3

HCID 962WaterHCID 521998p-Toluenesulfonic acid monohydrateHCID 67044209HCID 67044209, compound

Product 1

HCID 46199646Tezacaftor

Reagents, catalysts & solvents 1

HCID 887MethanolSolvent

Conditions

Temperature
80 °C

Procedure

(R)-1-(2,2-difluorobenzo[d][1,3]dioxol-5-yl)-N-(1-((2,2-dimethyl-1,3-dioxolan-4-yl)methyl)-6-fluoro-2-(1-hydroxy-2-methylpropan-2-yl)-1H-indol-5-yl)cyclopropanecarboxamide (3.0 g, 5.4 mmol) was dissolved in methanol (52 mL). Water (5.2 mL) was added followed by p-TsOH.H2O (204 mg, 1.1 mmol). The reaction was heated at 80° C. for 45 minutes. The solution was concentrated and then partitioned between ethyl acetate and saturated NaHCO3 solution. The ethyl acetate layer was dried over MgSO4 and concentrated. The residue was purified by column chromatography (50-100% ethyl acetate-hexanes) to yield the product as a cream colored foamy solid. (1.3 g, 47%, ee>98% by SFC). ESI-MS m/z calc. 520.5, found 521.7 (M+1)+. Retention time 1.69 minutes. 1H NMR (400 MHz, DMSO-d6) δ 8.31 (s, 1H), 7.53 (s, 1H), 7.42-7.38 (m, 2H), 7.33-7.30 (m, 2H), 6.22 (s, 1H), 5.01 (d, J=5.2 Hz, 1H), 4.90 (t, J=5.5 Hz, 1H), 4.75 (t, J=5.8 Hz, 1H), 4.40 (dd, J=2.6, 15.1 Hz, 1H), 4.10 (dd, J=8.7, 15.1 Hz, 1H), 3.90 (s, 1H), 3.65-3.54 (m, 2H), 3.48-3.33 (m, 2H), 1.48-1.45 (m, 2H), 1.35 (s, 3H), 1.32 (s, 3H) and 1.14-1.11 (m, 2H) ppm.

Workup

  1. concentrationThe solution was concentrated
  2. custompartitioned between ethyl acetate and saturated NaHCO3 solution
  3. dry with materialThe ethyl acetate layer was dried over MgSO4
  4. concentrationconcentrated
  5. customThe residue was purified by column chromatography (50-100% ethyl acetate-hexanes)

Sources & evidence

ORD record
ord-291fc25d4fef4175872c8ab411c4c687
Source dataset
uspto-grants-2010_01
Patent number
US07645789B2

Reaction notes

Loading…