Sodium Carbonate → Tert-butyl 4-(2-chloro-4-((1-(quinolin-2-YL)azetidin-3-YL)oxy)pyrimidin-5-YL)-5,6-dihydropyridine-1(2H)-carboxylate

HRID 454945Notes

Reaction equation

HRID 454945 reaction equation
Br[C:2]1[C:3]([O:9][CH:10]2[CH2:13][N:12]([C:14]3[CH:23]=[CH:22][C:21]4[C:16](=[CH:17][CH:18]=[CH:19][CH:20]=4)[N:15]=3)[CH2:11]2)=[N:4][C:5]([Cl:8])=[N:6][CH:7]=1.C([O-])([O-])=O.[Na+].[Na+].CC1(C)C(C)(C)OB([C:38]2[CH2:43][CH2:42][N:41]([C:44]([O:46][C:47]([CH3:50])([CH3:49])[CH3:48])=[O:45])[CH2:40][CH:39]=2)O1>O1CCOCC1.O.C1C=CC(P(C2C=CC=CC=2)[C-]2C=CC=C2)=CC=1.C1C=CC(P(C2C=CC=CC=2)[C-]2C=CC=C2)=CC=1.Cl[Pd]Cl.[Fe+2]>[Cl:8][C:5]1[N:4]=[C:3]([O:9][CH:10]2[CH2:13][N:12]([C:14]3[CH:23]=[CH:22][C:21]4[C:16](=[CH:17][CH:18]=[CH:19][CH:20]=4)[N:15]=3)[CH2:11]2)[C:2]([C:38]2[CH2:43][CH2:42][N:41]([C:44]([O:46][C:47]([CH3:50])([CH3:49])[CH3:48])=[O:45])[CH2:40][CH:39]=2)=[CH:7][N:6]=1

Participants

7

Reactant 3

HCID 10340Sodium CarbonateHCID 4642098Tert-butyl 4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1,2,3,6-tetrahydropyridine-1-carboxylateHCID 58547777HCID 58547777, compound

Product 1

HCID 58547741Tert-butyl 4-(2-chloro-4-((1-(quinolin-2-YL)azetidin-3-YL)oxy)pyrimidin-5-YL)-5,6-dihydropyridine-1(2H)-carboxylateYield 63.3%

Reagents, catalysts & solvents 3

HCID 178418228Bis(cyclopenta-1,4-dien-1-yl(diphenyl)phosphane);dichloropalladium;iron(2+)CatalystHCID 962WaterSolventHCID 312751,4-DioxaneSolvent

Procedure

To a solution of 2-(3-((5-bromo-2-chloropyrimidin-4-yl)oxy)azetidin-1-yl)quinoline (see PREPARATION P2.11; 600 mg, 1.5 mmol) in 1,4-dioxane (15 mL) was treated with Na2CO3 (318 mg, 3 mmol) in 3 mL of water as a solution, followed by additional of tert-butyl 4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-5,6-dihydropyridine-1(2H)-carboxylate (556 mg 1.8 mmol) and Pd(dppf)Cl2 (110 mg, 0.15 mmol). The resulting mixture was heated at refluxing overnight under N2 atmosphere. The solution was filtered through CELITE®, and the filter was concentrated. The residue was purified by flash column chromatography on silica gel (20% to 70% EtOAc in petroleum ether) to give the title product (472 mg, 0.95 mmol, yield: 63%). ESI-MS (M+1): 494 calc. for C26H28ClN5O3 493.

Workup

  1. temperatureThe resulting mixture was heated
  2. temperatureat refluxing overnight under N2 atmosphere
  3. filtrationThe solution was filtered through CELITE®
  4. concentrationthe filter was concentrated
  5. customThe residue was purified by flash column chromatography on silica gel (20% to 70% EtOAc in petroleum ether)

Sources & evidence

ORD record
ord-cd682033cd4f45e4949743335ae54077
Source dataset
uspto-grants-2013_07
Patent number
US08497265B2

Reaction notes

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