Sodium Hydroxide → 1-(3-(3-methyl-1-(1H-pyrrolo[2,3-b]pyridin-2-yl)but-1-enyl)phenyl)ethanone

HRID 1515948Notes

Reaction equation

[CH3:1][CH:2]([CH3:32])[CH:3]=[C:4]([C:23]1[CH:24]=[C:25]([C:29](=[O:31])[CH3:30])[CH:26]=[CH:27][CH:28]=1)[C:5]1[N:13](S(C2C=CC=CC=2)(=O)=O)[C:8]2=[N:9][CH:10]=[CH:11][CH:12]=[C:7]2[CH:6]=1.[OH-].[Na+]>C(O)C.O1CCCC1>[CH3:1][CH:2]([CH3:32])[CH:3]=[C:4]([C:23]1[CH:24]=[C:25]([C:29](=[O:31])[CH3:30])[CH:26]=[CH:27][CH:28]=1)[C:5]1[NH:13][C:8]2=[N:9][CH:10]=[CH:11][CH:12]=[C:7]2[CH:6]=1

Participants

Conditions

Temperature: 80 °C

Procedure

A solution of 1-(3-(3-methyl-1-(1-(phenylsulfonyl)-1H-pyrrolo[2,3-b]pyridin-2-yl)but-1-enyl)phenyl)ethanone (1.5 g, 3.4 mmol) in ethanol (30 mL) and tetrahydrofuran (60 mL) was treated with an aqueous sodium hydroxide solution (10%, 20 mL). The reaction was stirred at 80° C. for 16 h. Most of the solvent was removed in vacuo. The resulting precipitate was removed by filtration and washed with water (50 mL). The filtrate was concentrated in vacuo. Silica gel column chromatography (30 g, 200-300 mesh, 15% ethyl acetate/petroleum ether) afforded 1-(3-(3-methyl-1-(1H-pyrrolo[2,3-b]pyridin-2-yl)but-1-enyl)phenyl)ethanone (0.85 g, 82.2%) as an off-white solid: 1H NMR (300 MHz, d6-DMSO) δ ppm 11.60 (s, 1H), 8.20 (dd, 1H, J1=4.8 Hz, J2=1.5 Hz), 7.96 (d, 1H, J=8.1 Hz), 7.90-7.87 (m, 1H), 7.78 (s, 1H), 7.48-7.46 (m, 2H), 7.09 (dd, 1H, J1=7.5 Hz, J2=5.1 Hz), 6.44 (d, 1H, J=1.8 Hz), 6.24 (d, 1H, J=9.9 Hz), 2.63-2.56 (m, 1H), 2.57 (s, 3H), 1.08-1.02 (m, 6H).

Workup

customMost of the solvent was removed in vacuo
customThe resulting precipitate was removed by filtration
washwashed with water (50 mL)
concentrationThe filtrate was concentrated in vacuo

Sources & evidence

ORD record: ord-bd15335fa6fa4bdeab93941b657cf7fc
Source dataset: uspto-grants-2012_07
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08222416B2

Reaction notes

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