Triethylamine → 2-(2,6-Difluorophenyl)-5-(4-(2-(4-methylpiperazin-1-yl)ethoxy)phenyl)oxazole-4-carboxamide

HRID 389770Notes

Reaction equation

Cl[CH2:2][CH2:3][O:4][C:5]1[CH:10]=[CH:9][C:8]([C:11]2[O:15][C:14]([C:16]3[C:21]([F:22])=[CH:20][CH:19]=[CH:18][C:17]=3[F:23])=[N:13][C:12]=2[C:24]([NH2:26])=[O:25])=[CH:7][CH:6]=1.[CH3:27][N:28]1[CH2:33][CH2:32][NH:31][CH2:30][CH2:29]1.C(N(CC)CC)C>CS(C)=O>[F:23][C:17]1[CH:18]=[CH:19][CH:20]=[C:21]([F:22])[C:16]=1[C:14]1[O:15][C:11]([C:8]2[CH:9]=[CH:10][C:5]([O:4][CH2:3][CH2:2][N:31]3[CH2:32][CH2:33][N:28]([CH3:27])[CH2:29][CH2:30]3)=[CH:6][CH:7]=2)=[C:12]([C:24]([NH2:26])=[O:25])[N:13]=1

Participants

Conditions

Temperature: 150 °C

Procedure

To a solution of 5-(4-(2-chloroethoxy)phenyl)-2-(2,6-difluorophenyl)oxazole-4-carboxamide (0.020 g, 0.053 mmol) in DMSO (1 ml) were added N-methylpiperazine (11 μl, 0.106 mmol) and triethylamine (12 μl, 0.106 mmol). The reaction was heated to 150° C. via microwave irradiation and held at that temperature for 25 minutes. Purification was performed by preparative HPLC to afford 2-(2,6-difluorophenyl)-5-(4-(2-(4-methylpiperazin-1-yl)ethoxy)phenyl)oxazole-4-carboxamide (0.0024 g, 0.0054 mmol, 10%) as an off white powder. 1H NMR (CD3OD) δ 2.57 (3H, s), 2.76-2.96 (10H, m), 4.24 (2H, t), 7.06 (2H, m), 7.22 (2H, m), 7.64 (1H, m), 8.26 (2H, m). LCMS (2) 2.25 min; m/z (ES+) 443.

Workup

customPurification

Sources & evidence

ORD record: ord-ff96dbcbc42243928f854aebdf17dca8
Source dataset: uspto-grants-2013_02
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08378095B2

Reaction notes

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