Boron tribromide → HCID 67450398, compound

HRID 1853741Notes

Reaction equation

C[O:2][C:3]1[CH:12]=[C:11]([CH3:13])[C:10]2[NH:9][C:8](=[O:14])[C:7]3[S:15][CH:16]=[CH:17][C:6]=3[C:5]=2[C:4]=1[C:18]1[CH:23]=[CH:22][C:21]([C@@H:24]([CH3:35])[CH2:25][N:26](C)C(=O)OC(C)(C)C)=[CH:20][CH:19]=1.B(Br)(Br)[Br:37]>>[BrH:37].[NH2:26][CH2:25][C@@H:24]([C:21]1[CH:20]=[CH:19][C:18]([C:4]2[C:5]3[C:6]4[CH:17]=[CH:16][S:15][C:7]=4[C:8](=[O:14])[NH:9][C:10]=3[C:11]([CH3:13])=[CH:12][C:3]=2[OH:2])=[CH:23][CH:22]=1)[CH3:35]

Participants

Reactant 2

HCID 25134Boron tribromide

HCID 67449017(R)-tert-butyl 2-(4-(8-methoxy-6-methyl-4-oxo-4,5-dihydrothieno[2,3-c]quinolin-9-yl)phenyl)propyl(methyl)carbamate

Product 1

HCID 67450398HCID 67450398, compoundYield 73.2%

Procedure

Following General Procedure F, (R)-tert-butyl 2-(4-(8-methoxy-6-methyl-4-oxo-4,5-dihydrothieno[2,3-c]quinolin-9-yl)phenyl)propyl(methyl)carbamate (2.20 g, 4.60 mmol) was treated with BBr3 (1.0 M in CH2Cl2, 50 mL, 50 mmol) to afford the desired product as a yellow solid (1.50 g, 73%): 1H NMR (500 MHz, CD3OD) δ 7.58 (d, J=5.4 Hz, 1H), 7.55 (dd, J=7.9, 1.8 Hz, 1H), 7.45 (dd, J=7.8, 1.9 Hz, 1H), 7.35 (dd, J=7.9, 1.7 Hz, 1H), 7.30 (dd, J=7.7, 1.6 Hz, 1H), 7.08 (d, J=0.8 Hz, 1H), 6.17 (d, J=5.4 Hz, 1H), 3.36-3.19 (m, 3H), 2.57 (d, J=0.6 Hz, 3H), 1.50 (d, J=6.4 Hz, 3H); ESI MS m/z 365 [C21H20N2O2S+H]+; HPLC 98.3% (AUC), tR=8.64 min.

Sources & evidence

ORD record: ord-7d64179cfa3e4efab8ab034295d4c322
Source dataset: uspto-grants-2015_02
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08962648B2

Reaction notes

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