2-Methoxyaniline → HCID 71549720, compound

HRID 1847982Notes

Reaction equation

HRID 1847982 reaction equation
Br[C:2]1[S:3][C:4]2[CH:10]=[C:9]([CH2:11][N:12]3[C:16]4[CH:17]=[C:18]([O:23][CH3:24])[C:19]([O:21][CH3:22])=[CH:20][C:15]=4[N:14]=[CH:13]3)[CH:8]=[CH:7][C:5]=2[N:6]=1.[CH3:25][O:26][C:27]1[CH:33]=[CH:32][CH:31]=[CH:30][C:28]=1[NH2:29].C([O-])([O-])=O.[Cs+].[Cs+].C1(P(C2C=CC=CC=2)C2C3OC4C(=CC=CC=4P(C4C=CC=CC=4)C4C=CC=CC=4)C(C)(C)C=3C=CC=2)C=CC=CC=1>O1CCOCC1.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.[Pd].[Pd]>[CH3:22][O:21][C:19]1[C:18]([O:23][CH3:24])=[CH:17][C:16]2[N:12]([CH2:11][C:9]3[CH:8]=[CH:7][C:5]4[N:6]=[C:2]([NH:29][C:28]5[CH:30]=[CH:31][CH:32]=[CH:33][C:27]=5[O:26][CH3:25])[S:3][C:4]=4[CH:10]=3)[CH:13]=[N:14][C:15]=2[CH:20]=1

Participants

7

Reactant 4

HCID 70002-MethoxyanilineHCID 10796Cesium carbonateHCID 6360441,1'-(9,9-Dimethyl-9H-xanthene-4,5-diyl)bis(1,1-diphenylphosphine)HCID 86680991HCID 86680991, compound

Product 1

HCID 71549720HCID 71549720, compoundYield 33.4%

Reagents, catalysts & solvents 2

HCID 9811564Bis(dibenzylideneacetone)palladiumCatalystHCID 312751,4-DioxaneSolvent

Conditions

Temperature
100 °C

Procedure

To a suspension of 2-bromo-6-((5,6-dimethoxy-1H-benzo[d]imidazol-1-yl)methyl)benzo[d]thiazole (26 mg, 0.063 mmol) from Example 2 and 2-methoxyaniline (15.5 mg, 0.13 mmol) in anhydrous 1,4-dioxane (0.30 mL) at rt was added Cs2CO3 (41 mg, 0.13 mmol). Argon was bubbled into the mixture for 5 min followed by the addition of 4,5-bis(diphenylphosphino)-9,9-dimethylxanthene (3.0 mg, 0.005 mmol) and tris(dibenzylideneacetone)dipalladium (0) (2.3 mg, 0.003 mmol). Argon was bubbled into the mixture for an additional 5 min and then the mixture was heated in a sealed tube at 100° C. for 4 h. After cooling to rt, the reaction mixture was filtered through a Celite plug and the filtrate was purified by reverse-phase preparative HPLC using a mixture of water (5% CH3CN, 0.05% HCOOH) and CH3CN (0.05% HCOOH) as the mobile phase and Varian Pursuit XRs C18 column as the stationary phase to afford 6-((5,6-dimethoxy-1H-benzo[d]imidazol-1-yl)methyl)-N-(2-methoxyphenyl)benzo[d]thiazol-2-amine (9.4 mg, 33%) as a white solid. 1H NMR (300 MHz, DMSO-d6) δ 9.85 (s, 1H), 8.42 (d, J=7.3 Hz, 1H), 8.18 (s, 1H), 7.76 (d, J=1.1 Hz, 1H), 7.51 (d, J=8.1 Hz, 1H), 7.28 (dd, J=1.5, 8.3 Hz, 1H), 7.19 (d, J=2.1 Hz, 2H), 6.92-7.09 (m, 3H), 5.46 (s, 2H), 3.86 (s, 3H), 3.76 (d, J=0.8 Hz, 6H). LCMS (ESI) m/z 447 (M+H)+.

Workup

  1. customArgon was bubbled into the mixture for 5 min
  2. customArgon was bubbled into the mixture for an additional 5 min
  3. temperatureAfter cooling to rt
  4. filtrationthe reaction mixture was filtered through a Celite plug
  5. customthe filtrate was purified by reverse-phase preparative HPLC
  6. additiona mixture of water (5% CH3CN, 0.05% HCOOH) and CH3CN (0.05% HCOOH) as the mobile phase and Varian Pursuit XRs C18 column as the stationary phase

Sources & evidence

ORD record
ord-4c0c18e180b446e1bf054854f1ef132d
Source dataset
uspto-grants-2015_02
Patent number
US08952058B2

Reaction notes

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