Acetic Acid → 3-(cyclopropyl(6-methyl-2-(4-(2-methyl-1H-imidazol-1-yl)phenylamino)-5,6,7,8-tetrahydropyrido[4,3-d]pyrimidin-4-yl)amino)propanenitrile

HRID 1930657Notes

Reaction equation

HRID 1930657 reaction equation
[CH:1]1([N:4]([C:9]2[C:10]3[CH2:31][NH:30][CH2:29][CH2:28][C:11]=3[N:12]=[C:13]([NH:15][C:16]3[CH:21]=[CH:20][C:19]([N:22]4[CH:26]=[CH:25][N:24]=[C:23]4[CH3:27])=[CH:18][CH:17]=3)[N:14]=2)[CH2:5][CH2:6][C:7]#[N:8])[CH2:3][CH2:2]1.[C:32](O)(=O)C.C=O.C([BH3-])#N.[Na+]>CO>[CH:1]1([N:4]([C:9]2[C:10]3[CH2:31][N:30]([CH3:32])[CH2:29][CH2:28][C:11]=3[N:12]=[C:13]([NH:15][C:16]3[CH:21]=[CH:20][C:19]([N:22]4[CH:26]=[CH:25][N:24]=[C:23]4[CH3:27])=[CH:18][CH:17]=3)[N:14]=2)[CH2:5][CH2:6][C:7]#[N:8])[CH2:2][CH2:3]1

Participants

6

Reactant 4

HCID 176Acetic AcidHCID 712FormaldehydeHCID 5003444Sodium cyanoborohydrideHCID 593337983-(Cyclopropyl(2-(4-(2-methyl-1H-imidazol-1-yl)phenylamino)-5,6,7,8-tetrahydropyrido[4,3-d]pyrimidin-4-yl)amino)propanenitrile

Product 1

HCID 461995873-(cyclopropyl(6-methyl-2-(4-(2-methyl-1H-imidazol-1-yl)phenylamino)-5,6,7,8-tetrahydropyrido[4,3-d]pyrimidin-4-yl)amino)propanenitrileYield 3.6%

Reagents, catalysts & solvents 1

HCID 887MethanolSolvent

Procedure

3-(Cyclopropyl(2-(4-(2-methyl-1H-imidazol-1-yl)phenylamino)-5,6,7,8-tetrahydropyrido[4,3-d]pyrimidin-4-yl)amino)propanenitrile (94 mg, 0.23 mmol) was dissolved in methanol (2 mL). Acetic acid (0.013 mL, 0.23 mmol) was added followed by formaldehyde (0.017 mL, 0.23 mmol). The reaction mixture was stirred at room s temperature for 15 minutes and sodium cyanoborohydride (14.25 mg, 0.23 mmol) was added. The reaction mixture was concentrated under reduced pressure, filtered and purified by preparative HPLC (acidic system) yielding 3-(cyclopropyl(6-methyl-2-(4-(2-methyl-1H-imidazol-1-yl)phenylamino)-5,6,7,8-tetrahydropyrido[4,3-d]pyrimidin-4-yl)amino)propanenitrile (3.50 mg, 3.16%) as acetate salt.

Workup

  1. customfor 15 minutes
  2. concentrationThe reaction mixture was concentrated under reduced pressure
  3. filtrationfiltered
  4. custompurified by preparative HPLC (acidic system)

Sources & evidence

ORD record
ord-b3964615914a4f41977058e942c117d5
Source dataset
uspto-grants-2012_05
Patent number
US08188101B2

Reaction notes

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