Sodium Carbonate → 4-(5-Methyl-6-phenylimidazo[1,2-a]pyrimidin-7-yl)benzaldehyde

HRID 1915555Notes

Reaction equation

Cl[C:2]1[C:7]([C:8]2[CH:13]=[CH:12][CH:11]=[CH:10][CH:9]=2)=[C:6]([CH3:14])[N:5]2[CH:15]=[CH:16][N:17]=[C:4]2[N:3]=1.[CH:18]([C:20]1[CH:25]=[CH:24][C:23](B(O)O)=[CH:22][CH:21]=1)=[O:19].C(=O)([O-])[O-].[Na+].[Na+]>COCCOC.O.ClCCl.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]>[CH3:14][C:6]1[N:5]2[CH:15]=[CH:16][N:17]=[C:4]2[N:3]=[C:2]([C:23]2[CH:24]=[CH:25][C:20]([CH:18]=[O:19])=[CH:21][CH:22]=2)[C:7]=1[C:8]1[CH:13]=[CH:12][CH:11]=[CH:10][CH:9]=1

Participants

Conditions

Temperature: 120 °C

Procedure

To a mixture of 220 mg of the product obtained in step 2 and 131 mg 4-formylphenylboronic acid in 10 ml 1,2-dimethoxyethane are added 25 mg dichloro[1,1′-bis(diphenylphosphino)ferrocene]palladium (II) dichloromethane adduct and 7 ml of a 10% w/w sodium carbonate solution and the resulting mixture is heated to 120° C. by micro wave irradiation under an inert gas atmosphere for 1 h. The work up is performed by diluting the reaction mixture with water and dichloromethane, separating the phases and extraction of the aqueous phase with dichloromethane. The combined organic layers are dried over sodium sulphate and evaporated. The crude product is purified by silica gel chromatography (dichloromethane/methanol).

Workup

customseparating
extractionthe phases and extraction of the aqueous phase with dichloromethane
dry with materialThe combined organic layers are dried over sodium sulphate
customevaporated
customThe crude product is purified by silica gel chromatography (dichloromethane/methanol)

Sources & evidence

ORD record: ord-f11b42d91e6442ca834b81ffb49b5cce
Source dataset: uspto-grants-2013_12
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08614218B2

Reaction notes

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