Diisopropylethylamine → 5-Chloro-2-(4-((6-methoxypyridin-3-yl)methylamino)-7,8-dihydropyrido[4,3-d]pyrimidin-6(5H)-yl)benzonitrile

HRID 657791Notes

Reaction equation

HRID 657791 reaction equation
[CH3:1][O:2][C:3]1[N:8]=[CH:7][C:6]([CH2:9][NH:10][C:11]2[C:12]3[CH2:20][NH:19][CH2:18][CH2:17][C:13]=3[N:14]=[CH:15][N:16]=2)=[CH:5][CH:4]=1.[Cl:21][C:22]1[CH:23]=[CH:24][C:25](F)=[C:26]([CH:29]=1)[C:27]#[N:28].C(N(CC)C(C)C)(C)C.C([O-])(O)=O.[Na+]>CCOC(C)=O.C(#N)C>[Cl:21][C:22]1[CH:23]=[CH:24][C:25]([N:19]2[CH2:18][CH2:17][C:13]3[N:14]=[CH:15][N:16]=[C:11]([NH:10][CH2:9][C:6]4[CH:7]=[N:8][C:3]([O:2][CH3:1])=[CH:4][CH:5]=4)[C:12]=3[CH2:20]2)=[C:26]([CH:29]=1)[C:27]#[N:28]

Participants

7

Reactant 4

HCID 81531DiisopropylethylamineHCID 936535-Chloro-2-fluorobenzonitrile2×HCID 516892Sodium BicarbonateHCID 59840689N-((6-methoxypyridin-3-yl)methyl)-5,6,7,8-tetrahydropyrido[4,3-d]pyrimidin-4-amine

Product 1

HCID 250624095-Chloro-2-(4-((6-methoxypyridin-3-yl)methylamino)-7,8-dihydropyrido[4,3-d]pyrimidin-6(5H)-yl)benzonitrileYield 44.5%

Reagents, catalysts & solvents 2

HCID 6342AcetonitrileSolventHCID 8857Ethyl AcetateSolvent

Procedure

A mixture of N-((6-methoxypyridin-3-yl)methyl)-5,6,7,8-tetrahydropyrido[4,3-d]pyrimidin-4-amine (440 mg, 1.6 mmol), 5-chloro-2-fluorobenzonitrile (630 mg, 4.0 mmol), N,N-diisopropylethylamine (560 uL, 3.2 mmol), and acetonitrile (4.0 mL) was subjected to microwave irradiation at 180° C. for 4 h. After that an additional 5-chloro-2-fluorobenzonitrile (400 mg) was added and the mixture was subjected to microwave irradiation at 180° C. for another 2 h. After cooling, the mixture was treated with aq. NaHCO3 and EtOAc (100 mL). The organic layer was separated, washed with brine, dried (Na2SO4), and concentrated in vacuo. The residue was purified by silica gel column (EtOAc: 100%) and the obtained solid was washed with ether to yield an off-white solid (290 mg, 44%).

Workup

  1. customirradiation at 180° C. for 4 h
  2. customirradiation at 180° C. for another 2 h
  3. temperatureAfter cooling
  4. customThe organic layer was separated
  5. washwashed with brine
  6. dry with materialdried (Na2SO4)
  7. concentrationconcentrated in vacuo
  8. customThe residue was purified by silica gel column (EtOAc: 100%)
  9. washthe obtained solid was washed with ether

Sources & evidence

ORD record
ord-459226c8ba004785819a30c1b67ae24d
Source dataset
uspto-grants-2011_12
Patent number
US08076345B2

Reaction notes

Loading…