Tetrabutylammonium Fluoride → HCID 57504405, compound

HRID 1098029Notes

Reaction equation

HRID 1098029 reaction equation
[F-].C([N+](CCCC)(CCCC)CCCC)CCC.[Cl:19][C:20]1[CH:25]=[CH:24][CH:23]=[C:22]([C:26]#[N:27])[C:21]=1[N:28]1[C:32]2=[N:33][CH:34]=[N:35][C:36]([O:37][C@@H:38]([CH2:49][O:50][C@H:51]([CH3:64])[CH2:52][O:53][Si](C(C)C)(C(C)C)C(C)C)[C:39]([NH:41][C:42]3[CH:47]=[CH:46][C:45]([CH3:48])=[CH:44][N:43]=3)=[O:40])=[C:31]2[CH:30]=[N:29]1>C1COCC1>[Cl:19][C:20]1[CH:25]=[CH:24][CH:23]=[C:22]([C:26]#[N:27])[C:21]=1[N:28]1[C:32]2=[N:33][CH:34]=[N:35][C:36]([O:37][C@@H:38]([CH2:49][O:50][C@H:51]([CH3:64])[CH2:52][OH:53])[C:39]([NH:41][C:42]3[CH:47]=[CH:46][C:45]([CH3:48])=[CH:44][N:43]=3)=[O:40])=[C:31]2[CH:30]=[N:29]1

Participants

4

Reactant 2

HCID 2724141Tetrabutylammonium FluorideHCID 57504529HCID 57504529, compound

Product 1

HCID 57504405HCID 57504405, compoundYield 50.8%

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent2×

Procedure

1M tetrabutylammonium fluoride in THF (0.503 mL, 0.50 mmol) was added to (2S)-2-(1-(2-chloro-6-cyanophenyl)-1H-pyrazolo[3,4-d]pyrimidin-4-yloxy)-N-(5-methylpyridin-2-yl)-3-((R)-1-(triisopropylsilyloxy)propan-2-yloxy)propanamide (Intermediate AH8) (334 mg, 0.50 mmol) in THF (10 mL) under nitrogen. The resulting mixture was stirred at ambient temperature for 1 hour. The reaction mixture was quenched with saturated NH4Cl (2 mL), diluted with DCM (25 mL) and poured onto a phase separator. The organic phase was reduced and the residue was purified by preparative HPLC (Waters XBridge Prep C18 OBD column, 5μ silica, 50 mm diameter, 150 mm length), using decreasingly polar mixtures of water (containing 0.1% formic acid) and MeCN as eluents to afford the product (129 mg, 50.5%). 1H NMR (400 MHz, CDCl3) d 1.21-1.14 (3H, m), 2.30 (3H, s), 3.62 (2H, m), 3.78 (1H, m), 4.14-4.03 (1H, m), 4.28 (1H, dd), 6.10-6.03 (1H, m), 7.54 (1H, dd), 7.62 (1H, t), 7.79 (1H, m), 7.86 (1H, m), 8.07 (2H, d), 8.51 (1H, d), 8.62 (1H, d), 9.28-9.18 (1H, m), OH not observed. m/z (ES+) (M+H)+=508; HPLC tR=1.92 min. ee 90%

Workup

  1. customThe reaction mixture was quenched with saturated NH4Cl (2 mL)
  2. additiondiluted with DCM (25 mL)
  3. additionpoured onto a phase separator
  4. customthe residue was purified by preparative HPLC (Waters XBridge Prep C18 OBD column, 5μ silica, 50 mm diameter, 150 mm length)

Sources & evidence

ORD record
ord-a7965a6d01dc43d790ff4cd385c16a54
Source dataset
uspto-grants-2012_03
Patent number
US08143263B2

Reaction notes

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