Water → N-(7-(5-amino-4-methylpyridin-3-yl)isoquinolin-3-yl)cyclopropanecarboxamide

HRID 468727Notes

Reaction equation

HRID 468727 reaction equation
CC1(C)C(C)(C)OB([C:9]2[CH:18]=[C:17]3[C:12]([CH:13]=[C:14]([NH:19][C:20]([CH:22]4[CH2:24][CH2:23]4)=[O:21])[N:15]=[CH:16]3)=[CH:11][CH:10]=2)O1.Br[C:27]1[C:28]([CH3:34])=[C:29]([NH2:33])[CH:30]=[N:31][CH:32]=1.C(=O)([O-])[O-].[Cs+].[Cs+].O1CCOCC1.O.C(=O)(O)[O-].[Na+]>CC(P(C(C)(C)C)C1C=CC(N(C)C)=CC=1)(C)C.CC(P(C(C)(C)C)C1C=CC(N(C)C)=CC=1)(C)C.Cl[Pd]Cl>[NH2:33][C:29]1[C:28]([CH3:34])=[C:27]([C:9]2[CH:18]=[C:17]3[C:12]([CH:13]=[C:14]([NH:19][C:20]([CH:22]4[CH2:23][CH2:24]4)=[O:21])[N:15]=[CH:16]3)=[CH:11][CH:10]=2)[CH:32]=[N:31][CH:30]=1

Participants

8

Reactant 6

HCID 962WaterHCID 10796Cesium carbonateHCID 312751,4-DioxaneHCID 516892Sodium BicarbonateHCID 70606795-Bromo-4-methylpyridin-3-amineHCID 67976378N-(7-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)isoquinolin-3-yl)cyclopropanecarboxamide

Product 1

HCID 57410129N-(7-(5-amino-4-methylpyridin-3-yl)isoquinolin-3-yl)cyclopropanecarboxamideYield 37%

Reagents, catalysts & solvents 1

HCID 11714597Bis(di-tert-butyl(4-dimethylaminophenyl)phosphine)dichloropalladium(II)Catalyst

Conditions

Temperature
100 °C

Procedure

To a mixture of N-(7-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)isoquinolin-3-yl)cyclopropanecarboxamide (119.4 mg, 0.3530 mmol), 5-bromo-4-methylpyridin-3-amine (83.7 mg, 0.448 mmol), cesium carbonate (286.6 mg, 0.8796 mmol), and bis(di-tert-butyl(4-dimethylaminophenyl)phosphine)dichloropalladium(II) (19.2 mg, 0.0271 mmol) was added 1,4-dioxane (4 mL, 50 mmol) and water (0.4 mL, 20 mmol). The reaction was then stirred in a sealed vial at 100° C. for two hours. The reaction mixture was poured into saturated aqueous sodium bicarbonate, and extracted four times with dichloromethane. The combined organic extracts were dried over MgSO4, filtered, and evaporated in vacuo. The crude residue was purified via flash chromatography on silica gel (12 g silica, solvent gradient: 0-15% MeOH in dichloromethane) followed by reverse phase HPLC purification and lyophilization to yield 41.3 mg (37%) of N-(7-(5-amino-4-methylpyridin-3-yl)isoquinolin-3-yl)cyclopropanecarboxamide. LCMS (ESI): RT(min)=2.42, M+H=319.2, method=H; 1H NMR (400 MHz, DMSO-d6) δ 10.90 (s, 1H), 9.18 (s, 1H), 8.49 (s, 1H), 7.98 (s, 2H), 7.91 (d, J=8.5 Hz, 1H), 7.72 (s, 1H), 7.68-7.57 (m, 1H), 5.22 (s, 2H), 2.14-2.03 (m, 1H), 2.01 (s, 3H), 0.85 (dd, J=11.6, 6.1 Hz, 4H).

Workup

  1. extractionextracted four times with dichloromethane
  2. dry with materialThe combined organic extracts were dried over MgSO4
  3. filtrationfiltered
  4. customevaporated in vacuo
  5. customThe crude residue was purified via flash chromatography on silica gel (12 g silica, solvent gradient: 0-15% MeOH in dichloromethane)
  6. customfollowed by reverse phase HPLC purification and lyophilization

Sources & evidence

ORD record
ord-9b0c99dc96a64a9d904b983ac12c7338
Source dataset
uspto-grants-2014_01
Patent number
US08623889B2

Reaction notes

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