Methanesulfonyl chloride → N-(5-chloro-7-(2-chlorophenyl)-2,6-naphthyridin-3-yl)cyclopropanecarboxamide

HRID 468856Notes

Reaction equation

HRID 468856 reaction equation
[Cl:1][C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][C:3]=1[C:8]1[N+:9]([O-])=[CH:10][C:11]2[C:16]([CH:17]=1)=[CH:15][N:14]=[C:13]([NH:18][C:19]([CH:21]1[CH2:23][CH2:22]1)=[O:20])[CH:12]=2.CS([Cl:29])(=O)=O>CN(C)C=O.C(OCC)(=O)C>[Cl:29][C:10]1[N:9]=[C:8]([C:3]2[CH:4]=[CH:5][CH:6]=[CH:7][C:2]=2[Cl:1])[CH:17]=[C:16]2[C:11]=1[CH:12]=[C:13]([NH:18][C:19]([CH:21]1[CH2:23][CH2:22]1)=[O:20])[N:14]=[CH:15]2

Participants

5

Reactant 2

HCID 31297Methanesulfonyl chlorideHCID 679746713-(2-Chlorophenyl)-7-(cyclopropanecarboxamido)-2,6-naphthyridine 2-oxide

Product 1

HCID 76401542N-(5-chloro-7-(2-chlorophenyl)-2,6-naphthyridin-3-yl)cyclopropanecarboxamideYield 80%

Reagents, catalysts & solvents 2

HCID 6228DimethylformamideSolventHCID 8857Ethyl AcetateSolvent

Procedure

A mixture of 3-(2-chlorophenyl)-7-(cyclopropanecarboxamido)-2,6-naphthyridine 2-oxide (200 mg, 0.6 mmol) and methanesulfonyl chloride (0.47 mL, 5.9 mmol) in N,N-dimethylformamide (2.5 mL) was stirred at room temperature for 30 minutes. The reaction mixture was diluted with ethyl acetate (50 mL), washed with water (50 mL) and then saturated sodium bicarbonate solution (20 mL). The organic layer was separated, dried over sodium sulfate, filtered, and evaporated in vacuo to afford a residue that was purified by flash chromatography (silica, 12 g, ISCO, 0-60% ethyl acetate in heptane) to provide the title compound as an off-white solid (170 mg, 80%). 1H NMR (400 MHz, CDCl3) δ 9.09 (s, 1H), 8.97 (s, 1H), 8.35 (s, 1H), 8.06 (s, 1H), 7.75 (dd, J=7.4, 2.0 Hz, 1H), 7.52 (m, 1H), 7.46-7.33 (m, 2H), 1.70-1.60 (m, 1H), 1.25-1.18 (m, 2H), 1.02-0.94 (m, 2H). LCMS (Method E): RT=5.562 min, M+H+=358.0.

Workup

  1. washwashed with water (50 mL)
  2. customThe organic layer was separated
  3. dry with materialdried over sodium sulfate
  4. filtrationfiltered
  5. customevaporated in vacuo
  6. customto afford a residue that
  7. customwas purified by flash chromatography (silica, 12 g, ISCO, 0-60% ethyl acetate in heptane)

Sources & evidence

ORD record
ord-c690c5a0d6ac4113839f1c0c285d0a96
Source dataset
uspto-grants-2014_01
Patent number
US08623889B2

Reaction notes

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