Triphenylphosphine → 3-[(4-Methoxyphenyl)amino]-1-[(5-methylisoxazol-3-yl)methyl]-4-phenyl-1H-pyrrole-2,5-dione

HRID 2113770Notes

Reaction equation

[CH3:1][O:2][C:3]1[CH:8]=[CH:7][C:6]([NH:9][C:10]2[C:11](=[O:22])[NH:12][C:13](=[O:21])[C:14]=2[C:15]2[CH:20]=[CH:19][CH:18]=[CH:17][CH:16]=2)=[CH:5][CH:4]=1.[CH3:23][C:24]1[O:28][N:27]=[C:26]([CH2:29]O)[CH:25]=1.N(C(OCC)=O)=NC(OCC)=O.C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1>C1COCC1>[CH3:1][O:2][C:3]1[CH:4]=[CH:5][C:6]([NH:9][C:10]2[C:11](=[O:22])[N:12]([CH2:29][C:26]3[CH:25]=[C:24]([CH3:23])[O:28][N:27]=3)[C:13](=[O:21])[C:14]=2[C:15]2[CH:20]=[CH:19][CH:18]=[CH:17][CH:16]=2)=[CH:7][CH:8]=1

Participants

Conditions

Temperature: 130 °C

Procedure

To a solution of 3-[(4-methoxyphenyl)amino]-4-phenyl-1H-pyrrole-2,5-dione (0.17 mmol, 50 mg), 5-methylisoxazole-3-methanol (0.19 mmol, 21 mg) and diethyl azodicarboxylate (0.19 mmol, 33 mg) in dry THF (1 mL) was added triphenylphosphine (0.19 mmol, 49 mg) in dry THF (1 mL). The mixture was heated in a microwave reactor at 130° C. for six min. After cooling, the reaction mixture was purified by HPLC (95% 0.1M ammonium acetate buffer: 5% CH3CN→100% CH3CN) to give 14 mg (21%) of the title compound. 1H NMR (400 MHz, CDCl3) δ 7.23 (bs, 1H), 7.16-7.06 (m, 3H), 7.01-6.96 (m, 2H), 6.63-6.53 (m, 4H), 6.03 (d, J=0.7 Hz, 1H), 4.82 (s, 2H), 3.70 (s, 3H), 2.39 (d, J=0.7 Hz, 3H).

Workup

temperatureAfter cooling
customthe reaction mixture was purified by HPLC (95% 0.1M ammonium acetate buffer: 5% CH3CN→100% CH3CN)

Sources & evidence

ORD record: ord-1ee0ba7a571e4eba96b96934a218d55b
Source dataset: uspto-grants-2008_10
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US07432288B2

Reaction notes

Loading…