HCID 10513804, compound → HCID 11640734, compound

HRID 729315Notes

Reaction equation

[CH2:1]([N:5]1[C:9](=[O:10])[C:8](Cl)=[C:7]([C:12]2[CH:17]=[CH:16][CH:15]=[CH:14][CH:13]=2)[S:6]1(=[O:19])=[O:18])[CH2:2][CH2:3][CH3:4].[NH2:20][C:21]1[CH:22]=[CH:23][C:24]2[O:28][C:27]([C:29]([O:31]C(C)(C)C)=[O:30])=[CH:26][C:25]=2[CH:36]=1>CC#N>[CH2:1]([N:5]1[C:9](=[O:10])[C:8]([NH:20][C:21]2[CH:22]=[CH:23][C:24]3[O:28][C:27]([C:29]([OH:31])=[O:30])=[CH:26][C:25]=3[CH:36]=2)=[C:7]([C:12]2[CH:17]=[CH:16][CH:15]=[CH:14][CH:13]=2)[S:6]1(=[O:19])=[O:18])[CH2:2][CH2:3][CH3:4]

Participants

Conditions

Temperature: 160 °C

Procedure

A mixture of 2-butyl-4-chloro-5-phenylisothiazol-3(2H)-one 1,1-dioxide (1.000 g, 3.336 mmol), tert-butyl 5-amino-1-benzofuran-2-carboxylate (0.778 g, 3.336 mmol) and TEA (0.340 ml, 2.471 mmol) in MeCN (5 ml) was heated in a microwave reactor at 160° C. for 1.5 h. The reaction mixture was evaporated and the residue was purified by flash chromatography using 5:1 DCM/EtOAc (+1% AcOH) as eluent to give the title compound (0.425 g, 29%). 1H NMR (500 MHz CD3OD); δ 13.54 (bs, 1H), 9.63 (s, 1H), 7.34 (s, 1H), 7.29 (d, 1H), 7.14-6.97 (m, 6H), 3.71 (t, 2H), 1.75 (qnt, 2H), 1.42 (sex, 2H), 0.95 (t, 2H); Mass Spectrum: M−H+ 439

Workup

customThe reaction mixture was evaporated
customthe residue was purified by flash chromatography

Sources & evidence

ORD record: ord-f895523c37634cdeaba94e6ec793b528
Source dataset: uspto-grants-2009_09
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US07582629B2

Reaction notes

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