Triethylamine → 6-bromo-N-methoxy-N-methylquinoline-2-carboxamide

HRID 1693070Notes

Reaction equation

HRID 1693070 reaction equation
[Br:1][C:2]1[CH:3]=[C:4]2[C:9](=[CH:10][CH:11]=1)[N:8]=[C:7]([C:12]([OH:14])=O)[CH:6]=[CH:5]2.C(N(CC)CC)C.Cl.[CH3:23][NH:24][O:25][CH3:26].CN(C(ON1N=NC2C=CC=CC1=2)=[N+](C)C)C.F[P-](F)(F)(F)(F)F>CN(C=O)C>[Br:1][C:2]1[CH:3]=[C:4]2[C:9](=[CH:10][CH:11]=1)[N:8]=[C:7]([C:12]([N:24]([O:25][CH3:26])[CH3:23])=[O:14])[CH:6]=[CH:5]2

Participants

6

Reactant 4

HCID 8471TriethylamineHCID 81138Methanamine, N-methoxy-, hydrochloride (1:1)HCID 2733084Methanaminium, N-((1H-benzotriazol-1-yloxy)(dimethylamino)methylene)-N-methyl-, hexafluorophosphate(1-) (1:1)HCID 123862086-Bromoquinoline-2-carboxylic acid

Product 1

HCID 574581646-bromo-N-methoxy-N-methylquinoline-2-carboxamideYield 92%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

A DMF (1 ml) solution of 6-bromoquinoline-2-carboxylic acid (4000 mg, 15.9 mmol, US2005165049A1), triethylamine (6.64 ml, 47.6 mmol), N,O-dimethylhydroxyamine hydrochloride (1860 mg, 19.0 mmol) and HBTU (6620 mg, 17.5 mmol) was treated in the procedure described in Example 1, Step G. The crude residue was applied to a silica gel column and eluted with hexane/ethyl acetate (4:1) to furnish the title compound (4.29 g, 92% yield) as an orange solid. 1H NMR (300 MHz, CDCl3) δ 3.47 (3H, s), 3.80 (3H, s), 7.68-7.80 (1H, brs), 7.81-7.85 (1H, m), 8.00-8.06 (2H, m), 8.17 (1H, d, J=8.1 Hz). MS (ESI): m/z 295, 297 (M+H)+.

Workup

  1. washeluted with hexane/ethyl acetate (4:1)

Sources & evidence

ORD record
ord-76dbed122f154693a6b89c6519eae4e7
Source dataset
uspto-grants-2012_04
Patent number
US08158650B2

Reaction notes

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