Hydrochloric Acid → N4-Cyclohexyl-N2-(4-(2-methyl-1H-imidazol-1-yl)phenyl)-5,6,7,8-tetrahydropyrido[4,3-d]pyrimidine-2,4-diamine

HRID 1930635Notes

Reaction equation

HRID 1930635 reaction equation
[CH:1]1([NH:7][C:8]2[C:9]3[CH2:30][N:29](C(OC(C)(C)C)=O)[CH2:28][CH2:27][C:10]=3[N:11]=[C:12]([NH:14][C:15]3[CH:20]=[CH:19][C:18]([N:21]4[CH:25]=[CH:24][N:23]=[C:22]4[CH3:26])=[CH:17][CH:16]=3)[N:13]=2)[CH2:6][CH2:5][CH2:4][CH2:3][CH2:2]1.Cl>CO>[CH:1]1([NH:7][C:8]2[C:9]3[CH2:30][NH:29][CH2:28][CH2:27][C:10]=3[N:11]=[C:12]([NH:14][C:15]3[CH:20]=[CH:19][C:18]([N:21]4[CH:25]=[CH:24][N:23]=[C:22]4[CH3:26])=[CH:17][CH:16]=3)[N:13]=2)[CH2:2][CH2:3][CH2:4][CH2:5][CH2:6]1

Participants

4

Reactant 2

HCID 313Hydrochloric AcidHCID 59333796tert-Butyl 4-(cyclohexylamino)-2-(4-(2-methyl-1H-imidazol-1-yl)phenylamino)-7,8-dihydropyrido[4,3-d]pyrimidine-6(5H)-carboxylate

Product 1

HCID 59333805N4-Cyclohexyl-N2-(4-(2-methyl-1H-imidazol-1-yl)phenyl)-5,6,7,8-tetrahydropyrido[4,3-d]pyrimidine-2,4-diamine

Reagents, catalysts & solvents 1

HCID 887MethanolSolvent

Conditions

Temperature
75 °C

Procedure

tert-Butyl 4-(cyclohexylamino)-2-(4-(2-methyl-1H-imidazol-1-yl)phenylamino)-7,8-dihydropyrido[4,3-d]pyrimidine-6(5H)-carboxylate (124 mg, 0.25 mmol) was dissolved in methanol (2 mL). Hydrochloric acid (7.48 μL, 0.25 mmol) was added and the reaction mixture was stirred at 75° C. for 1 h. The solvent was evaporated under reduced pressure and the crude N4-cyclohexyl-N2-(4-(2-methyl-1H-imidazol-1-yl)phenyl)-5,6,7,8-tetrahydropyrido[4,3-d]pyrimidine-2,4-diamine (93 mg, 94%) was used as such in the subsequent step. MS (ES+) m/z 404.3 (M+H)+

Workup

  1. customThe solvent was evaporated under reduced pressure

Sources & evidence

ORD record
ord-76e23ede843d486bb21baa0da112067d
Source dataset
uspto-grants-2012_05
Patent number
US08188101B2

Reaction notes

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