Sodium Carbonate → tert-butyl 4-(4-(4-(7-methoxy-1,5-naphthyridin-4-ylthio)phenylamino)phthalazin-1-yl)-5,6-dihydropyridine-1(2H)-carboxylate

HRID 1042909Notes

Reaction equation

HRID 1042909 reaction equation
Cl[C:2]1[C:11]2[C:6](=[CH:7][CH:8]=[CH:9][CH:10]=2)[C:5]([NH:12][C:13]2[CH:18]=[CH:17][C:16]([S:19][C:20]3[C:29]4[C:24](=[CH:25][C:26]([O:30][CH3:31])=[CH:27][N:28]=4)[N:23]=[CH:22][CH:21]=3)=[CH:15][CH:14]=2)=[N:4][N:3]=1.CC1(C)C(C)(C)OB([C:40]2[CH2:45][CH2:44][N:43]([C:46]([O:48][C:49]([CH3:52])([CH3:51])[CH3:50])=[O:47])[CH2:42][CH:41]=2)O1.C(=O)([O-])[O-].[Na+].[Na+]>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].O1CCOCC1>[CH3:31][O:30][C:26]1[CH:25]=[C:24]2[C:29]([C:20]([S:19][C:16]3[CH:17]=[CH:18][C:13]([NH:12][C:5]4[C:6]5[C:11](=[CH:10][CH:9]=[CH:8][CH:7]=5)[C:2]([C:40]5[CH2:45][CH2:44][N:43]([C:46]([O:48][C:49]([CH3:52])([CH3:51])[CH3:50])=[O:47])[CH2:42][CH:41]=5)=[N:3][N:4]=4)=[CH:14][CH:15]=3)=[CH:21][CH:22]=[N:23]2)=[N:28][CH:27]=1

Participants

6

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 866286644-chloro-N-(4-(7-methoxy-1,5-naphthyridin-4-ylthio)phenyl)phthalazin-1-amine

Product 1

HCID 67317430tert-butyl 4-(4-(4-(7-methoxy-1,5-naphthyridin-4-ylthio)phenylamino)phthalazin-1-yl)-5,6-dihydropyridine-1(2H)-carboxylate

Reagents, catalysts & solvents 2

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

Conditions

Temperature
100 °C

Procedure

In a 20 mL sealed tube, was added 1,4-dioxane (1.08 mL), purged the solvent with nitrogen for 5 minutes, and sealed the tube. To the tube was added 4-chloro-N-(4-(7-methoxy-1,5-naphthyridin-4-ylthio)phenyl)phthalazin-1-amine (0.150 g, 0.336 mmol), tert-butyl 4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-5,6-dihydropyridine-1(2H)-carboxylate (0.125 g, 0.404 mmol) and sodium carbonate (2.0 M aqueous) (0.336 mL, 0.673 mmol). The mixture was purged with nitrogen, sealed, and then to it was added PdCl2(dppf) (0.012 g, 0.017 mmol). The mixture was again purged with nitrogen, sealed, and heated to 100° C., while stirring for 3 hours. The reaction was cooled to RT and concentrated. The crude material was purified by Isco silica gel chromatography using 0-100% CH2Cl2:MeOH(90:10)/CH2Cl2. The product containing fractions were concentrated to yield tert-butyl 4-(4-(4-(7-methoxy-1,5-naphthyridin-4-ylthio)phenylamino)phthalazin-1-yl)-5,6-dihydropyridine-1(2H)-carboxylate as light yellow solid. MS: [M+H]=593.0; Calc'd 592.7 for C33H32N6O3S.

Workup

  1. customIn a 20 mL sealed tube
  2. custompurged the solvent with nitrogen for 5 minutes
  3. customsealed the tube
  4. customThe mixture was purged with nitrogen
  5. customsealed
  6. customThe mixture was again purged with nitrogen
  7. customsealed
  8. temperatureThe reaction was cooled to RT
  9. concentrationconcentrated
  10. customThe crude material was purified by Isco silica gel chromatography
  11. additionThe product containing fractions
  12. concentrationwere concentrated

Sources & evidence

ORD record
ord-21a2123679324758aa84dec2bf1b1f77
Source dataset
uspto-grants-2013_10
Patent number
US08557816B2

Reaction notes

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