Benzylamine → tert-butyl 4-(benzylamino)-2-(4-(oxazol-5-yl)phenylamino)-7,8-dihydropyrido[4,3-d]pyrimidine-6(5H)-carboxylate

HRID 1930544Notes

Reaction equation

[CH2:1]([NH2:8])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.[O:9]1[C:13]([C:14]2[CH:19]=[CH:18][C:17]([NH:20][C:21]3[N:22]=[C:23](OS(C(F)(F)F)(=O)=O)[C:24]4[CH2:30][N:29]([C:31]([O:33][C:34]([CH3:37])([CH3:36])[CH3:35])=[O:32])[CH2:28][CH2:27][C:25]=4[N:26]=3)=[CH:16][CH:15]=2)=[CH:12][N:11]=[CH:10]1>O1CCOCC1>[CH2:1]([NH:8][C:23]1[C:24]2[CH2:30][N:29]([C:31]([O:33][C:34]([CH3:37])([CH3:36])[CH3:35])=[O:32])[CH2:28][CH2:27][C:25]=2[N:26]=[C:21]([NH:20][C:17]2[CH:16]=[CH:15][C:14]([C:13]3[O:9][CH:10]=[N:11][CH:12]=3)=[CH:19][CH:18]=2)[N:22]=1)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1

Participants

Conditions

Temperature: 25 °C

Procedure

Benzylamine (0.061 mL, 0.55 mmol) was added to tert-butyl 2-(4-(oxazol-5-yl)phenylamino)-4-(trifluoromethylsulfonyloxy)-7,8-dihydropyrido[4,3-d]pyrimidine-6(5H)-carboxylate (0.3 g, 0.55 mmol, Example 3c) in dioxane (4 mL) and the reaction mixture was stirred over night at 25° C. The solvent was removed under reduced pressure and the reaction mixture was redissolved in DCM and washed with water. The organic layer was dried (MgSO4), filtered and concentrated to give tert-butyl 4-(benzylamino)-2-(4-(oxazol-5-yl)phenylamino)-7,8-dihydropyrido[4,3-d]pyrimidine-6(5H)-carboxylate (0.238 g, 86%). MS (ESI+)/(ESI−) m/z 499/497

Workup

customThe solvent was removed under reduced pressure
dissolutionthe reaction mixture was redissolved in DCM
washwashed with water
dry with materialThe organic layer was dried (MgSO4)
filtrationfiltered
concentrationconcentrated

Sources & evidence

ORD record: ord-00ca6f8c153246d9bbe2b3cfa03acad9
Source dataset: uspto-grants-2012_05
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08188101B2

Reaction notes

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