3-Methoxyaniline → 3-(2-amino-7,8-dihydropyrido[4,3-d]pyrimidin-6(5H)-yl)-N-(3-methoxyphenyl)benzamide

HRID 1051993Notes

Reaction equation

HRID 1051993 reaction equation
[NH2:1][C:2]1[N:3]=[CH:4][C:5]2[CH2:11][N:10]([C:12]3[CH:13]=[C:14]([CH:18]=[CH:19][CH:20]=3)[C:15]([OH:17])=O)[CH2:9][CH2:8][C:6]=2[N:7]=1.C(N(CC)C(C)C)(C)C.CN(C(ON1N=NC2C=CC=CC1=2)=[N+](C)C)C.F[P-](F)(F)(F)(F)F.[CH3:54][O:55][C:56]1[CH:61]=[CH:60][CH:59]=[C:58]([NH2:62])[CH:57]=1>CN(C=O)C>[NH2:1][C:2]1[N:3]=[CH:4][C:5]2[CH2:11][N:10]([C:12]3[CH:13]=[C:14]([CH:18]=[CH:19][CH:20]=3)[C:15]([NH:62][C:58]3[CH:59]=[CH:60][CH:61]=[C:56]([O:55][CH3:54])[CH:57]=3)=[O:17])[CH2:9][CH2:8][C:6]=2[N:7]=1

Participants

6

Reactant 4

HCID 108243-MethoxyanilineHCID 81531DiisopropylethylamineHCID 2733084Methanaminium, N-((1H-benzotriazol-1-yloxy)(dimethylamino)methylene)-N-methyl-, hexafluorophosphate(1-) (1:1)HCID 866958153-(2-amino-7,8-dihydropyrido[4,3-d]pyrimidin-6(5H)-yl)benzoic acid

Product 1

HCID 717353623-(2-amino-7,8-dihydropyrido[4,3-d]pyrimidin-6(5H)-yl)-N-(3-methoxyphenyl)benzamideYield 73%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Conditions

Temperature
50 °C

Procedure

A mixture of 3-(2-amino-7,8-dihydropyrido[4,3-d]pyrimidin-6(5H)-yl)benzoic acid (41 mg, 0.15 mmol), N,N-diisopropylethylamine (0.105 mL, 0.60 mmol), and HBTU (63 mg, 0.165 mmol) in 1.5 mL DMF was briefly warmed to approx. 50° C. to dissolve solids, then continued stirring at room temperature. After 10 minutes meta-anisidine (0.025 mL, 0.225 mmol) was added and the reaction continued at room temperature for 4 hours. The reaction mixture was partitioned between EtOAc and aqueous Na2CO3 solution, the EtOAc layer washed with H2O, brine, dried with anhydrous Na2SO4 and rotary evaporated. The resulting solid was triturated with an acetone/hexane mixture to give the title compound as a light beige solid (41 mg, 73%). 1H NMR (DMSO-d6) δ: 10.13 (s, 1H), 8.13 (s, 1H), 7.46-7.51 (m, 2H), 7.31-7.41 (m, 3H), 7.19-7.28 (m, 2H), 6.68 (ddd, J=8.1, 2.4, 0.9 Hz, 1H), 6.41 (s, 2H), 4.29 (s, 2H), 3.75 (s, 3H), 3.65 (t, J=6.0 Hz, 2H), 2.77 (t, J=5.9 Hz, 2H).

Workup

  1. dissolutionto dissolve solids
  2. customThe reaction mixture was partitioned between EtOAc and aqueous Na2CO3 solution
  3. washthe EtOAc layer washed with H2O, brine
  4. dry with materialdried with anhydrous Na2SO4 and rotary evaporated
  5. customThe resulting solid was triturated with an acetone/hexane mixture

Sources & evidence

ORD record
ord-d69d466596dd404c8e88edb47741e41d
Source dataset
uspto-grants-2016_07
Patent number
US09388176B2

Reaction notes

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