Boron tribromide → 9-[4-(2-Aminopropan-2-yl)phenyl]-6-chloro-8-hydroxythieno[2,3-c]quinolin-4(5H)-one Hydrochloride
Reaction equation
[Cl:1][C:2]1[C:11]2[NH:10][C:9](=[O:12])[C:8]3[S:13][CH:14]=[CH:15][C:7]=3[C:6]=2[C:5]([C:16]2[CH:21]=[CH:20][C:19]([C:22]([NH:25]C(=O)OC(C)(C)C)([CH3:24])[CH3:23])=[CH:18][CH:17]=2)=[C:4]([O:33]C)[CH:3]=1.BrB(Br)Br>>[ClH:1].[NH2:25][C:22]([C:19]1[CH:18]=[CH:17][C:16]([C:5]2[C:6]3[C:7]4[CH:15]=[CH:14][S:13][C:8]=4[C:9](=[O:12])[NH:10][C:11]=3[C:2]([Cl:1])=[CH:3][C:4]=2[OH:33])=[CH:21][CH:20]=1)([CH3:24])[CH3:23]Participants
3
Procedure
Following General Procedure F, tert-butyl 2-[4-(6-chloro-8-methoxy-4-oxo-4,5-dihydrothieno[2,3-c]quinolin-9-yl)phenyl]propan-2-ylcarbamate (10 mg, 0.020 mmol) was reacted with tribromoborane (1.0 M in methylene chloride, 1.0 mL, 1.0 mmol) to afford the desired product (9.7 mg, 97%) as an off-white solid: 1H NMR (500 MHz, CD3OD) δ 7.71 (d, J=8.4 Hz, 2H), 7.60 (d, J=5.4 Hz, 1H), 7.42 (d, J=8.4 Hz, 2H), 7.30 (s, 1H), 6.06 (d, J=5.4 Hz, 1H), 1.86 (s, 6H); ESI MS m/z 385 [C20H17ClN2O2S+H]+; HPLC >99% (AUC), tR=10.89 min
Sources & evidence
- ORD record
- ord-bbe762de911d40bbad7fc71a29735397
- Source dataset
- uspto-grants-2015_02
- Patent number
- US08962648B2
Reaction notes
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