Sodium Bicarbonate → 4-(3-Chloro-4-methoxybenzylamino)-5-methoxycarbonyl-6-(5,6,7,8-tetrahydroimidazo[1,2-a]pyrazin-7-yl)-2-(4-hydroxypiperidin-1-yl)pyrimidine

HRID 917645Notes

Reaction equation

[Cl:1][C:2]1[CH:3]=[C:4]([CH:25]=[CH:26][C:27]=1[O:28][CH3:29])[CH2:5][NH:6][C:7]1[C:12]([C:13]([O:15][CH3:16])=[O:14])=[C:11](Cl)[N:10]=[C:9]([N:18]2[CH2:23][CH2:22][CH:21]([OH:24])[CH2:20][CH2:19]2)[N:8]=1.[N:30]1[CH:31]=[CH:32][N:33]2[CH2:38][CH2:37][NH:36][CH2:35][C:34]=12.C(=O)([O-])O.[Na+]>CN(C)C(=O)C.C(N(CC)CC)C.C(O)(=O)CC(CC(O)=O)(C(O)=O)O>[Cl:1][C:2]1[CH:3]=[C:4]([CH:25]=[CH:26][C:27]=1[O:28][CH3:29])[CH2:5][NH:6][C:7]1[C:12]([C:13]([O:15][CH3:16])=[O:14])=[C:11]([N:36]2[CH2:37][CH2:38][N:33]3[CH:32]=[CH:31][N:30]=[C:34]3[CH2:35]2)[N:10]=[C:9]([N:18]2[CH2:23][CH2:22][CH:21]([OH:24])[CH2:20][CH2:19]2)[N:8]=1

Participants

Conditions

Temperature: 85 °C

Procedure

To a solution of 4-(3-chloro-4-methoxybenzylamino)-5-methoxycarbonyl-6-chloro-2-(4-hydroxypiperidin-1-yl)pyrimidine (prepared in the above (3)) 56 mg in N,N-dimethylacetamide 0.5 ml are added a solution of 5,6,7,8-tetrahydroimidazo[1,2-a]pyrazine 31 mg in N,N-dimethylacetamide 0.5 ml and triethylamine 27 μl at room temperature, and the mixture is stirred at 80-90° C. for 5 hours. The reaction mixture is diluted with an aqueous citric acid solution, made basic with an aqueous sodium hydrogen carbonate solution and extracted with ethyl acetate. The organic layer is washed, dried and concentrated in vacuo to give 4-(3-chloro-4-methoxybenzylamino)-5-methoxycarbonyl-6-(5,6,7,8-tetrahydroimidazo[1,2-a]pyrazin-7-yl)-2-(4-hydroxypiperidin-1-yl)pyrimidine as a pale yellow powder, 66 mg.

Workup

extractionextracted with ethyl acetate
washThe organic layer is washed
customdried
concentrationconcentrated in vacuo

Sources & evidence

ORD record: ord-a214d90601184bffa6e3871b1c0867e8
Source dataset: uspto-grants-2007_09
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US07273868B2

Reaction notes

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