Hydrochloric Acid → (2S)-N-(5-chloropyridin-2-yl)-2-(1-(3-chloropyridin-2-yl)-1H-pyrazolo[3,4-d]pyrimidin-4-yloxy)-3-((S)-1-hydroxypropan-2-yloxy)propanamide

HRID 1098039Notes

Reaction equation

HRID 1098039 reaction equation
Cl.[Si]([O:9][CH2:10][C@@H:11]([O:13][CH2:14][C@H:15]([O:26][C:27]1[N:32]=[CH:31][N:30]=[C:29]2[N:33]([C:36]3[C:41]([Cl:42])=[CH:40][CH:39]=[CH:38][N:37]=3)[N:34]=[CH:35][C:28]=12)[C:16]([NH:18][C:19]1[CH:24]=[CH:23][C:22]([Cl:25])=[CH:21][N:20]=1)=[O:17])[CH3:12])(C(C)(C)C)(C)C>C1COCC1.O>[Cl:25][C:22]1[CH:23]=[CH:24][C:19]([NH:18][C:16](=[O:17])[C@@H:15]([O:26][C:27]2[N:32]=[CH:31][N:30]=[C:29]3[N:33]([C:36]4[C:41]([Cl:42])=[CH:40][CH:39]=[CH:38][N:37]=4)[N:34]=[CH:35][C:28]=23)[CH2:14][O:13][C@@H:11]([CH3:12])[CH2:10][OH:9])=[N:20][CH:21]=1

Participants

5

Reactant 2

HCID 313Hydrochloric AcidHCID 57504541(2S)-3-((S)-1-(tert-butyldimethylsilyloxy)propan-2-yloxy)-N-(5-chloropyridin-2-yl)-2-(1-(3-chloropyridin-2-yl)-1H-pyrazolo [3,4-d]pyrimidin-4-yloxy)propanamide

Product 1

HCID 57504421(2S)-N-(5-chloropyridin-2-yl)-2-(1-(3-chloropyridin-2-yl)-1H-pyrazolo[3,4-d]pyrimidin-4-yloxy)-3-((S)-1-hydroxypropan-2-yloxy)propanamideYield 71.5%

Reagents, catalysts & solvents 2

HCID 962WaterSolventHCID 8028TetrahydrofuranSolvent

Procedure

HCl (4M in Dioxane) (0.606 mL, 2.42 mmol) was added to (2S)-3-((S)-1-(tert-butyldimethylsilyloxy)propan-2-yloxy)-N-(5-chloropyridin-2-yl)-2-(1-(3-chloropyridin-2-yl)-1H-pyrazolo[3,4-d]pyrimidin-4-yloxy)propanamide (Intermediate AO4) (300 mg, 0.48 mmol) in THF (5 mL) and water (0.5 mL) at room temperature. The resulting solution was stirred at room temperature for 10 minutes. The reaction mixture was evaporated and the residue partitioned between EtOAc (25 mL) and sat NaHCO3 (10 mL). The organic layer was dried (MgSO4) and evaporated. The crude product was purified by preparative chiral-HPLC on a Merck 50 mm 20 μm Chiralpak AS column, eluting isocratically with 30% EtOH in isohexane (modified with Et3N) as eluent. The fractions containing the desired compound were evaporated to dryness to afford the product (173 mg, 70.7%). 1H NMR (400 MHz, CDCl3) δ 1.17 (d, 3H), 2.64 (s, 1H), 3.51-3.67 (m, 2H), 3.69-3.79 (m, 1H), 4.11-4.28 (m, 2H), 6.05 (t, 1H), 7.45-7.50 (m, 1H), 7.66-7.71 (m, 1H), 7.99-8.04 (m, 1H), 8.18-8.25 (m, 2H), 8.47 (s, 1H), 8.60-8.65 (m, 2H), 9.10 (s, 1H) m/z (ESI+) (M+H)+=504.40; HPLC tR=1.96 min

Workup

  1. customThe reaction mixture was evaporated
  2. customthe residue partitioned between EtOAc (25 mL)
  3. dry with materialThe organic layer was dried (MgSO4)
  4. customevaporated
  5. customThe crude product was purified by preparative chiral-HPLC on a Merck 50 mm 20 μm Chiralpak AS column
  6. washeluting isocratically with 30% EtOH in isohexane (modified with Et3N) as eluent
  7. additionThe fractions containing the desired compound
  8. customwere evaporated to dryness

Sources & evidence

ORD record
ord-503faddf7b72454f803c13dfa9b52d76
Source dataset
uspto-grants-2012_03
Patent number
US08143263B2

Reaction notes

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