1,2-Dimethoxyethane → 3-[3-(4-Methyl-piperazin-1-yl)-cyclobutyl]-1-(2-phenyl-4-trifluoromethyl-quinolin-7-yl)-imidazo[1,5-a]pyrazin-8-ylamine

HRID 386222Notes

Reaction equation

HRID 386222 reaction equation
I[C:2]1[N:3]=[C:4]([CH:12]2[CH2:15][CH:14]([N:16]3[CH2:21][CH2:20][N:19]([CH3:22])[CH2:18][CH2:17]3)[CH2:13]2)[N:5]2[CH:10]=[CH:9][N:8]=[C:7]([NH2:11])[C:6]=12.[C:23]1([C:29]2[CH:38]=[C:37]([C:39]([F:42])([F:41])[F:40])[C:36]3[C:31](=[CH:32][C:33](B4OC(C)(C)C(C)(C)O4)=[CH:34][CH:35]=3)[N:30]=2)[CH:28]=[CH:27][CH:26]=[CH:25][CH:24]=1.C(=O)([O-])[O-].[Cs+].[Cs+].COCCOC>C1C=CC([P]([Pd]([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)[P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1.O>[CH3:22][N:19]1[CH2:20][CH2:21][N:16]([CH:14]2[CH2:15][CH:12]([C:4]3[N:5]4[CH:10]=[CH:9][N:8]=[C:7]([NH2:11])[C:6]4=[C:2]([C:33]4[CH:32]=[C:31]5[C:36]([C:37]([C:39]([F:42])([F:40])[F:41])=[CH:38][C:29]([C:23]6[CH:28]=[CH:27][CH:26]=[CH:25][CH:24]=6)=[N:30]5)=[CH:35][CH:34]=4)[N:3]=3)[CH2:13]2)[CH2:17][CH2:18]1

Participants

7

Reactant 4

HCID 80711,2-DimethoxyethaneHCID 10796Cesium carbonateHCID 536290872-Phenyl-7-(4,4,5,5-tetramethyl-[1,3,2]dioxaborolan-2-yl)-4-trifluoromethyl-quinolineHCID 576810251-Iodo-3-[3-(4-methyl-piperazin-1-yl)-cyclobutyl]-imidazo[1,5-a]pyrazin-8-ylamine

Product 1

HCID 116784723-[3-(4-Methyl-piperazin-1-yl)-cyclobutyl]-1-(2-phenyl-4-trifluoromethyl-quinolin-7-yl)-imidazo[1,5-a]pyrazin-8-ylamine

Reagents, catalysts & solvents 2

HCID 178418397HCID 178418397, compoundCatalystHCID 962WaterSolvent

Conditions

Temperature
75 °C

Procedure

1-Iodo-3-[3-(4-methyl-piperazin-1-yl)-cyclobutyl]-imidazo[1,5-a]pyrazin-8-ylamine (120 mg, 0.00029 mole), 2-phenyl-7-(4,4,5,5-tetramethyl-[1,3,2]dioxaborolan-2-yl)-4-trifluoromethyl-quinoline (230 mg, 0.00058 mole), cesium carbonate (330 mg, 0.0010 mole), 1,2-dimethoxyethane (6 mL, 0.06 mole) and water (1 mL) were combined in a 25 ml round bottom flask with a magnetic stir bar. The flask was subjected to three vacuum, argon cycles and charged with tetrakis(triphenylphosphine)palladium(0) (35 mg, 0.000030 mole). The flask was subjected to three vacuum, argon cycles again. The reaction was stirred under argon at 75° C. (external temperature) overnight. The product mixture was concentrated in vacuo, then allowed to stand under vacuum for 1 h. The product mixture was then chromatographed on silica gel with methylene chloride, methanol, concentrated ammonium hydroxide (140:10:1). Only the purest fractions were combined and concentration in vacuo, and placement under high vacuum for 30 minutes afforded the title compound as a yellow solid. The solid was re-crystallized from hexanes/ether to afford the title compound as a yellow solid; 1H NMR (CD3OD, 400 MHz) δ 2.14-2.62 (m, 15 H), 2.78-2.82 (Q, 1 H, J=7.9 Hz), 3.62-3.67 (Q, 1H, J=7.9 H), 6.32 (bs, 2 H), 7.12-7.14 (d, 1 H, J=4.8 Hz), 7.58-7.64 (m, 4 H), 8.16-8.22 (m, 2 H), 8.39-8.42 (m, 3 H), 8.48 (s, 1 H); 19F NMR (DMSO, 400 MHz) δ-60.15; MS (ES+): 557.98 (10) [MH+]; HPLC TR 3.408 min. (100%) (polar—15 min).

Workup

  1. concentrationThe product mixture was concentrated in vacuo
  2. waitto stand under vacuum for 1 h
  3. customThe product mixture was then chromatographed on silica gel with methylene chloride, methanol, concentrated ammonium hydroxide (140:10:1)
  4. concentrationconcentration in vacuo, and placement under high vacuum for 30 minutes

Sources & evidence

ORD record
ord-72380992c3874e51be1ea8db59983358
Source dataset
uspto-grants-2013_02
Patent number
US08367826B2

Reaction notes

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