Potassium Phosphate, Tribasic → 6-[2-chloro-4-(thiophen-2-yl)phenyl]-8-ethyl-2-(4-(4-methylpiperazin-1-yl)phenylamino)pyrido[2,3-d]pyrimidin-7(8H)-one

HRID 387227Notes

Reaction equation

HRID 387227 reaction equation
Br[C:2]1[CH:7]=[CH:6][C:5]([C:8]2[C:31](=[O:32])[N:30]([CH2:33][CH3:34])[C:11]3[N:12]=[C:13]([NH:16][C:17]4[CH:22]=[CH:21][C:20]([N:23]5[CH2:28][CH2:27][N:26]([CH3:29])[CH2:25][CH2:24]5)=[CH:19][CH:18]=4)[N:14]=[CH:15][C:10]=3[CH:9]=2)=[C:4]([Cl:35])[CH:3]=1.[S:36]1[CH:40]=[CH:39][CH:38]=[C:37]1B(O)O.[O-]P([O-])([O-])=O.[K+].[K+].[K+]>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:35][C:4]1[CH:3]=[C:2]([C:37]2[S:36][CH:40]=[CH:39][CH:38]=2)[CH:7]=[CH:6][C:5]=1[C:8]1[C:31](=[O:32])[N:30]([CH2:33][CH3:34])[C:11]2[N:12]=[C:13]([NH:16][C:17]3[CH:22]=[CH:21][C:20]([N:23]4[CH2:28][CH2:27][N:26]([CH3:29])[CH2:25][CH2:24]4)=[CH:19][CH:18]=3)[N:14]=[CH:15][C:10]=2[CH:9]=1

Participants

5

Reactant 3

HCID 62657Potassium Phosphate, TribasicHCID 27339602-Thiopheneboronic acidHCID 671196306-(4-Bromo-2-chlorophenyl)-8-ethyl-2-(4-(4-methylpiperazin-1-yl)phenylamino)pyrido[2,3-d]pyrimidin-7(8H)-one

Product 1

HCID 671196146-[2-chloro-4-(thiophen-2-yl)phenyl]-8-ethyl-2-(4-(4-methylpiperazin-1-yl)phenylamino)pyrido[2,3-d]pyrimidin-7(8H)-oneYield 100%

Reagents, catalysts & solvents 1

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

Conditions

Temperature
140 °C

Procedure

6-(4-Bromo-2-chlorophenyl)-8-ethyl-2-(4-(4-methylpiperazin-1-yl)phenylamino)pyrido[2,3-d]pyrimidin-7(8H)-one (12, 50 mg, 0.09 mmol), thiophene-2-boronic acid (35 mg, 0.27 mmol), K3PO4 (57 mg, 0.27 mmol) and PdCl2(dppf) (7 mg, 0.01 mmol) were mixed as solids and placed under argon. Argon was bubbled through a mixture of dimethylformamide:water (20:1, 2.0 mL) for 20 min. The solvent was added to the solid and the suspension was heated under microwave irradiation at 140° C. for 30 min. The reaction mixture was evaporated and the crude product was purified by column chromatography, eluting with dichloromethane:methanol (100:3). The product was triturated with refluxing acetonitrile to yield the title compound as a yellow solid (48 mg, 0.09 mmol, 100%). ESMS m/z 557 (M+H)+; 1H NMR (400 MHz, CDCl3) δ ppm 8.54 (s, 1H), 7.72 (s, 1H), 7.51-7.60 (m, 4H), 7.40 (d, J=8.0 Hz, 1H), 7.30-7.36 (m, 2H), 7.27 (s, 1H), 7.08-7.13 (m, 1H), 6.97 (d, J=8.8 Hz, 2H), 4.50 (q, J=7.0 Hz, 2H), 3.16-3.28 (m, 4H), 2.54-2.69 (m, 4H), 1.39 (t, J=7.0 Hz, 3H).

Workup

  1. customArgon was bubbled through a mixture of dimethylformamide:water (20:1, 2.0 mL) for 20 min
  2. additionThe solvent was added to the solid
  3. customThe reaction mixture was evaporated
  4. customthe crude product was purified by column chromatography
  5. washeluting with dichloromethane:methanol (100:3)
  6. customThe product was triturated with refluxing acetonitrile

Sources & evidence

ORD record
ord-61a28373a8164ef59bd4bc43a588e859
Source dataset
uspto-grants-2013_02
Patent number
US08372970B2

Reaction notes

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