Iodoethane → 2-(1-(2-hydroxyethyl)-2,6-dioxopiperidin-3-yl)isoindolin-1,3-dione (S)-2-(diethylamino)-3-methylbutanoate

HRID 475031Notes

Reaction equation

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

Participants

Conditions

Temperature: 80 °C

Procedure

2-(1-(2-hydroxyethyl)-2,6-dioxopiperidin-3-yl)isoindolin-1,3-dione (S)-2-amino-3-methylbutanoate (92 mg) was dissolved in acetonitrile (18 mL). Ethyl iodide (74 mg) was added. The mixture was stirred at 80° C. and allowed to react overnight. The solvent was removed by rotary evaporation in vacuo. White solid (30 mg) was obtained after the crude product was purified by silica gel column (eluted with acetic ether:petroleum ether=1:1). 1H NMR (CDCl3, ppm) δ 7.86-7.90 (m, 2H), 7.76-7.79 (m, 2H), 4.97-5.08 (m, 1H), 4.38-4.43 (m, 1H), 4.05-4.30 (m, 3H), 3.15-3.25 (m, 1H), 2.95-3.05 (m, 1H), 2.80-2.95 (m, 2H), 2.45-2.58 (m, 4H), 2.10-2.20 (m, 1H), 1.90-2.10 (m, 2H), 1.00-1.20 (m, 7H), 0.95-0.98 (m, 3H), 0.87-0.91 (m, 3H).

Workup

customto react overnight
customThe solvent was removed by rotary evaporation in vacuo

Sources & evidence

ORD record: ord-14ea0396d61c4be4b7aacf232458f069
Source dataset: uspto-grants-2014_01
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08637545B2

Reaction notes

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