p-Aminoacetophenone → HCID 57857496, compound

HRID 2266965Notes

Reaction equation

[C:1]1([C:12]2[CH:17]=[CH:16][CH:15]=[CH:14][CH:13]=2)[CH:6]=[CH:5][C:4](CS([O-])(=O)=O)=[CH:3][CH:2]=1.[NH2:18][C:19]1[CH:24]=[CH:23][C:22]([C:25](=[O:27])[CH3:26])=[CH:21][CH:20]=1.C([O-])([O-])=O.[K+].[K+]>CC(O)(C)C>[C:1]1([C:12]2[CH:13]=[CH:14][CH:15]=[CH:16][CH:17]=2)[CH:2]=[CH:3][C:4]([NH:18][C:19]2[CH:24]=[CH:23][C:22]([C:25](=[O:27])[CH3:26])=[CH:21][CH:20]=2)=[CH:5][CH:6]=1

Participants

Conditions

Temperature: 110 °C

Procedure

Following general procedure A, a mixture of 4-biphenylmethanesulfonate (124 mg, 0.5 mmol), 4′-aminoacetophenone (81 mg, 0.6 mmol), K2CO3 (97 mg, 0.7 mmol), 10 (4 mg, 1 mol %), 1 (2.5 mg, 1 mol %), and t-BuOH (6 mL) was heated to 110° C. for 16 h. The crude product was purified via the Biotage SP4 (silica-packed 25+M; 15-50% EtOAc/hexanes) to provide the title compound as a white solid (139 mg, 97%), mp 136-139° C. 1H NMR (300 MHz, CDCl3) δ: 7.90 (d, J=9.0 Hz, 2H), 7.59 (m 4H), 7.45 (t, J=7.0 Hz, 2H), 7.35 (t, J=7.0 Hz, 1H), 7.25 (d, J=9.0 Hz, 2H), 7.05 (d, J=9.0 Hz, 2H), 6.35 (s 1H), 2.55 (s, 3H) ppm. 13C NMR (75 MHz, CDCl3) δ: 196.8, 148.4, 140.7, 140.2, 136.2, 130.9, 129.3, 129.1, 128.4, 127.3, 127.0, 120.9, 114.9, 26.5 ppm. IR (neat, cm−1): 3324, 1656, 1586, 1524, 1487, 1339, 1278, 1178, 827, 763.

Workup

customThe crude product was purified via the Biotage SP4 (silica-packed 25+M; 15-50% EtOAc/hexanes)

Sources & evidence

ORD record: ord-145b5137b4a74090995b0ac860ef587b
Source dataset: uspto-grants-2010_12
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US07858784B2

Reaction notes

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