1-Methyl-5-(tri-n-butylstannyl)imidazole → (1-Benzyl-1H-indazol-5-yl)-(6-(3-methyl-3H-imidazol-4-yl)-pyrido[3,4-d]pyrimidin-4-yl)-amine

HRID 566395Notes

Reaction equation

HRID 566395 reaction equation
[CH2:1]([N:8]1[C:16]2[C:11](=[CH:12][C:13]([NH:17][C:18]3[C:19]4[CH:27]=[C:26](Cl)[N:25]=[CH:24][C:20]=4[N:21]=[CH:22][N:23]=3)=[CH:14][CH:15]=2)[CH:10]=[N:9]1)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.[CH3:29][N:30]1[C:34]([Sn](CCCC)(CCCC)CCCC)=[CH:33][N:32]=[CH:31]1>O1CCOCC1.[Pd](Cl)Cl.C1(P(C2C=CC=CC=2)CCCCP(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.[Ag]=O>[CH2:1]([N:8]1[C:16]2[C:11](=[CH:12][C:13]([NH:17][C:18]3[C:19]4[CH:27]=[C:26]([C:34]5[N:30]([CH3:29])[CH:31]=[N:32][CH:33]=5)[N:25]=[CH:24][C:20]=4[N:21]=[CH:22][N:23]=3)=[CH:14][CH:15]=2)[CH:10]=[N:9]1)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1

Participants

6

Reactant 2

HCID 109156511-Methyl-5-(tri-n-butylstannyl)imidazoleHCID 21952012(1-Benzyl-1H-indazol-5-yl)-(6-chloropyrido[3,4-d]pyrimidin-4-yl)-amine

Product 1

HCID 22727432(1-Benzyl-1H-indazol-5-yl)-(6-(3-methyl-3H-imidazol-4-yl)-pyrido[3,4-d]pyrimidin-4-yl)-amineYield 20%

Reagents, catalysts & solvents 3

HCID 92152Silver(II) oxideCatalystHCID 10974057(Butane-1,4-diyl)bis(diphenylphosphane)--dichloropalladium (1/1)CatalystHCID 312751,4-DioxaneSolvent

Procedure

(1-Benzyl-1H-indazol-5-yl)-(6-chloro-pyrido[3,4-d]pyrimidin-4-yl)-amine (0.70 g, 1.81 mmol), 1-methyl-5-[tri(n-butyl)stannyl]imidazole (prepared according to the published method: K. Gaare et. al., Acta Chem. Scand., (1993), 47(1), p57-62) (2.2 g, 6 mmol), 1,4-bis(diphenylphosphino)-butane palladium (II) chloride (0.41 g, 0.7 mmol) and silver oxide (0.22 g, 1.8 mmol) were reacted in dry dioxane according to Procedure B. Purification by silica gel chromatography, eluting with 10%MeOH/EtOAc, gave the product as a pale brown solid (0.16 g, 0.37 mmol, 20%); δH CDCl310.62 (1H,s), 9.25 (1H,s), 8.75 (1H,s), 8.60 (1H,s), 8.13 (1H,s), 8.03 (1H,s), 7.20-7.78 (9H,m), 5.61 (2H,s), 3.96 (3H,s); m/z (M+1+) 433.

Workup

  1. customPurification by silica gel chromatography
  2. washeluting with 10%MeOH/EtOAc

Sources & evidence

ORD record
ord-2789f6a62a8f473e8d295a513889f241
Source dataset
uspto-grants-2001_01
Patent number
US06174889B1

Reaction notes

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