Phthalimide → HCID 59226459, compound

HRID 2046776Notes

Reaction equation

[CH3:1][C:2]1([CH3:18])[CH2:7][CH:6](O)[CH:5]=[C:4]([C:9]2[CH:14]=[CH:13][N:12]=[CH:11][C:10]=2[N+:15]([O-:17])=[O:16])[CH2:3]1.C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.[C:38]1(=[O:48])[NH:42][C:41](=[O:43])[C:40]2=[CH:44][CH:45]=[CH:46][CH:47]=[C:39]12>C1COCC1>[CH3:1][C:2]1([CH3:18])[CH2:7][CH:6]([N:42]2[C:38](=[O:48])[C:39]3[C:40](=[CH:44][CH:45]=[CH:46][CH:47]=3)[C:41]2=[O:43])[CH:5]=[C:4]([C:9]2[CH:14]=[CH:13][N:12]=[CH:11][C:10]=2[N+:15]([O-:17])=[O:16])[CH2:3]1

Participants

Conditions

Temperature: 0 °C

Procedure

To a homogeneous solution of 5,5-dimethyl-3-(3-nitropyridin-4-yl)cyclohex-2-enol (1.0 eq), triphenyl phosphine (1.5 eq), and phthalimide (1.5 eq) in THF (0.2 M) cooled to 0° C., ditertbutylazodicarboxylate (1.5 eq) in THF was added to the solution. The mixture was stirred at 0° C. for 2 hours. The reaction was concentrated in vacuo. The residue was purified by column (5% methanol in 1:1 ethyl acetate and hexanes) to give 2-(5,5-dimethyl-3-(3-nitropyridin-4-yl)cyclohex-2-enyl)isoindoline-1,3-dione (99%). LC/MS (m/z): MH+=378.2, Rt=1.10.

Workup

concentrationThe reaction was concentrated in vacuo
customThe residue was purified by column (5% methanol in 1:1 ethyl acetate and hexanes)

Sources & evidence

ORD record: ord-296122a8912a4828a60bf975f9074310
Source dataset: uspto-grants-2013_11
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08592455B2

Reaction notes

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