Potassium Carbonate → 8-Chloro-5-pyrimidin-4-yl-1-(3,4,5,6-tetrahydro-2H-[1,2']bipyridinyl-4-yl)-5,6-dihydro-4H-2,3,5,10b-tetraaza-benzo[e]azulene

HRID 2118053Notes

Reaction equation

[Cl:1][C:2]1[CH:27]=[CH:26][C:5]2[N:6]3[C:10]([CH2:11][NH:12][CH2:13][C:4]=2[CH:3]=1)=[N:9][N:8]=[C:7]3[CH:14]1[CH2:19][CH2:18][N:17]([C:20]2[CH:25]=[CH:24][CH:23]=[CH:22][N:21]=2)[CH2:16][CH2:15]1.C(=O)([O-])[O-].[K+].[K+].Cl[C:35]1[CH:40]=[CH:39][N:38]=[CH:37][N:36]=1>C(OCC)(=O)C>[Cl:1][C:2]1[CH:27]=[CH:26][C:5]2[N:6]3[C:10]([CH2:11][N:12]([C:35]4[CH:40]=[CH:39][N:38]=[CH:37][N:36]=4)[CH2:13][C:4]=2[CH:3]=1)=[N:9][N:8]=[C:7]3[CH:14]1[CH2:15][CH2:16][N:17]([C:20]2[CH:25]=[CH:24][CH:23]=[CH:22][N:21]=2)[CH2:18][CH2:19]1

Participants

Conditions

Temperature: 95 °C

Procedure

A mixture of the amine from example 4 (500 mg, 1.3 mmol), potassium carbonate (480 mg, 3.5 mmol) and 4-chloropyrimidine (300 mg, 2.6 mmol) was stirred at 95° C. for 18 hours. The cooled reaction mixture was diluted with ethyl acetate and the solution was washed with brine (5×), then dried over magnesium sulphate and concentrated under reduced pressure. The crude product was purified by column chromatography on silica gel using dichloromethane:methanol (100:0 to 95:5) as eluant, and the product was triturated with diethyl ether to afford the title compound (80 mg).

Workup

customThe cooled reaction mixture
washthe solution was washed with brine (5×)
dry with materialdried over magnesium sulphate
concentrationconcentrated under reduced pressure
customThe crude product was purified by column chromatography on silica gel
customthe product was triturated with diethyl ether

Sources & evidence

ORD record: ord-d24fe4a3c89e412f89eac9eb7ea3f6a0
Source dataset: uspto-grants-2008_10
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US07442795B2

Reaction notes

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