Diisopropylethylamine → 4-(5-Bromoimidazo[1,2-a]pyrazin-8-ylamino)-N-(4-hydroxybenzyl)benzamide

HRID 1921743Notes

Reaction equation

[Br:1][C:2]1[N:7]2[CH:8]=[CH:9][N:10]=[C:6]2[C:5]([NH:11][C:12]2[CH:20]=[CH:19][C:15]([C:16]([OH:18])=O)=[CH:14][CH:13]=2)=[N:4][CH:3]=1.[NH2:21][CH2:22][C:23]1[CH:28]=[CH:27][C:26]([OH:29])=[CH:25][CH:24]=1.C(N(CC)C(C)C)(C)C.F[P-](F)(F)(F)(F)F.N1(OC(N(C)C)=[N+](C)C)C2N=CC=CC=2N=N1>CN(C=O)C>[Br:1][C:2]1[N:7]2[CH:8]=[CH:9][N:10]=[C:6]2[C:5]([NH:11][C:12]2[CH:13]=[CH:14][C:15]([C:16]([NH:21][CH2:22][C:23]3[CH:28]=[CH:27][C:26]([OH:29])=[CH:25][CH:24]=3)=[O:18])=[CH:19][CH:20]=2)=[N:4][CH:3]=1

Participants

Conditions

Temperature: 0 °C

Procedure

A mixture of 4-(5-bromoimidazo[1,2-a]pyrazin-8-ylamino)benzoic acid (116 mg, 0.35 mmol), 4-aminomethylphenol (43 mg, 0.35 mmol), and N,N-diisopropylethylamine (0.094 mL, 0.525 mmol) in DMF (1 mL) is cooled to 0° C., and O-(7-azabenzotriazol-1-yl)-N,N,N′,N′-tetramethyluronium hexafluorophosphate (160 mg, 0.42 mmol) is added. The cooling bath is removed, and the reaction mixture stirred at 25° C. for 18 hours. After this time the solvent is removed in vacuo, and the residue triturated with MeOH. The resultant solid is collected by filtration and identified as the desired phenol.

Workup

customThe cooling bath is removed
customAfter this time the solvent is removed in vacuo
customthe residue triturated with MeOH
filtrationThe resultant solid is collected by filtration

Sources & evidence

ORD record: ord-33aae504d3754fcd9eee5681b701467a
Source dataset: uspto-grants-2012_05
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08173656B2

Reaction notes

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