Methanol → 2-((cyclopropylamino)(5-fluoropyridin-2-yl)methyl)-N-(5-methyl-1H-pyrazol-3-yl)quinazolin-4-amine

HRID 473175Notes

Reaction equation

HRID 473175 reaction equation
[F:1][C:2]1[CH:3]=[CH:4][C:5]([C:8]([C:10]2[N:19]=[C:18]([NH:20][C:21]3[CH:25]=[C:24]([CH3:26])[NH:23][N:22]=3)[C:17]3[C:12](=[CH:13][CH:14]=[CH:15][CH:16]=3)[N:11]=2)=O)=[N:6][CH:7]=1.[CH:27]1([NH2:30])[CH2:29][CH2:28]1.[BH4-].[Na+].CO>CC(O)C.CC(O)=O>[CH:27]1([NH:30][CH:8]([C:5]2[CH:4]=[CH:3][C:2]([F:1])=[CH:7][N:6]=2)[C:10]2[N:19]=[C:18]([NH:20][C:21]3[CH:25]=[C:24]([CH3:26])[NH:23][N:22]=3)[C:17]3[C:12](=[CH:13][CH:14]=[CH:15][CH:16]=3)[N:11]=2)[CH2:29][CH2:28]1

Participants

7

Reactant 4

HCID 887MethanolHCID 69828Cyclopropylamine2×HCID 4311764Sodium borohydride2×HCID 56848496(5-fluoropyridin-2-yl)(4-(5-methyl-1H-pyrazol-3-ylamino)quinazolin-2-yl)methanone

Product 1

HCID 666135922-((cyclopropylamino)(5-fluoropyridin-2-yl)methyl)-N-(5-methyl-1H-pyrazol-3-yl)quinazolin-4-amine

Reagents, catalysts & solvents 2

HCID 176Acetic AcidSolventHCID 3776IsopropanolSolvent2×

Conditions

Temperature
140 °C

Procedure

To (5-fluoropyridin-2-yl)(4-(5-methyl-1H-pyrazol-3-ylamino)quinazolin-2-yl)methanone from Example 1 (1 equiv) in 2-propanol are added cyclopropylamine (5 equiv) and 3 Å(8-12 mesh) molecular sieves, and the mixture is heated at 140° C. in a microwave reactor. Additional cyclopropylamine is added and microwave or conventional heating is continued until the reaction is substantially complete according to NMR. Then a suspension of sodium borohydride (10 equiv) in 2-propanol is added and the mixture is stirred at rt. Methanol, additional sodium borohydride, and traces of HOAc are added as necessary until the reaction is substantially complete, then the mixture is filtered and the filtrate is concentrated. DMSO is added and the mixture is purified by preparative HPLC to afford 2-((cyclopropylamino)(5-fluoropyridin-2-yl)methyl)-N-(5-methyl-1H-pyrazol-3-yl)quinazolin-4-amine.

Workup

  1. temperaturemicrowave or conventional heating
  2. additionis added
  3. filtrationthe mixture is filtered
  4. concentrationthe filtrate is concentrated
  5. additionDMSO is added
  6. customthe mixture is purified by preparative HPLC

Sources & evidence

ORD record
ord-8460774673b3436aaa6b129d8ee7c567
Source dataset
uspto-grants-2014_01
Patent number
US08633207B2

Reaction notes

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