Diisopropylethylamine → 7-amino-N-(2-methyl-5-(3-(trifluoromethyl)benzamido)phenyl)thieno[2,3-b]pyrazine-6-carboxamide

HRID 1184880Notes

Reaction equation

[NH2:1][C:2]1[C:10]2[C:5](=[N:6][CH:7]=[CH:8][N:9]=2)[S:4][C:3]=1[C:11]([OH:13])=O.CN(C(ON1N=NC2C=CC=NC1=2)=[N+](C)C)C.F[P-](F)(F)(F)(F)F.CCN(C(C)C)C(C)C.[NH2:47][C:48]1[CH:49]=[C:50]([NH:55][C:56](=[O:67])[C:57]2[CH:62]=[CH:61][CH:60]=[C:59]([C:63]([F:66])([F:65])[F:64])[CH:58]=2)[CH:51]=[CH:52][C:53]=1[CH3:54]>CN(C=O)C.C(O)(=O)CC(CC(O)=O)(C(O)=O)O>[NH2:1][C:2]1[C:10]2[C:5](=[N:6][CH:7]=[CH:8][N:9]=2)[S:4][C:3]=1[C:11]([NH:47][C:48]1[CH:49]=[C:50]([NH:55][C:56](=[O:67])[C:57]2[CH:62]=[CH:61][CH:60]=[C:59]([C:63]([F:64])([F:65])[F:66])[CH:58]=2)[CH:51]=[CH:52][C:53]=1[CH3:54])=[O:13]

Participants

Conditions

Temperature: 80 °C

Procedure

A solution of 7-aminothieno[2,3-b]pyrazine-6-carboxylic acid 8 (32 mg, 0.164 mmol), HATU (74.8 mg, 0.197 mmol) and DIPEA (0.054 mL, 0.328 mmol) in DMF (2 mL) was stirred for 15 at rt. N-(3-amino-4-methylphenyl)-3-(trifluoromethyl)benzamide 67 (48.2 mg, 0.164 mmol) was added and stirred overnight at 80° C. The reaction mixture was poured in cold citric acid solution and the resulting precipitate was collected. Purification by HPLC gave the title compound 7-amino-N-(2-methyl-5-(3-(trifluoromethyl)benzamido)phenyl)thieno[2,3-b]pyrazine-6-carboxamide 70 (14 mg, 18%). NMR (400 MHz, DMSO-d6) 2.23 (s, 3H), 7.07 (s, 2H), 7.28 (d, J=8.2 Hz, 1H), 7.62 (dd, J=8.2 Hz and 2.0 Hz, 1H), 7.79 (t, J=7.8 Hz, 1H), 7.84 (d, J=2.0 Hz, 1H), 7.97 (d, J=7.8 Hz, 1H), 8.28 (d, J=8.2 Hz, 1H), 8.31 (s, 1H), 8.78 (dd, J=5.1 Hz and 2.3 Hz, 2H), 9.48 (s, 1H), 10.49 (s, 1H). (m/z)=472 (M+H)+.

Workup

customthe resulting precipitate was collected
customPurification by HPLC

Sources & evidence

ORD record: ord-753a0614b9b54a9cac57172502341086
Source dataset: uspto-grants-2014_03
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08669256B2

Reaction notes

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