Acetic Acid → N-[4-chloro-2-(1-cyclopropylmethoxyiminoethyl)phenyl]trifluoromethanesulfonamide

HRID 970857Notes

Reaction equation

HRID 970857 reaction equation
CN(C)CCN.[CH:7]1([CH2:10][O:11][N:12]2C(=O)C3=CC=CC=C3C2=O)[CH2:9][CH2:8]1.C(O)(=O)C.[C:27]([C:30]1[CH:35]=[C:34]([Cl:36])[CH:33]=[CH:32][C:31]=1[NH:37][S:38]([C:41]([F:44])([F:43])[F:42])(=[O:40])=[O:39])(=O)[CH3:28]>CCO>[Cl:36][C:34]1[CH:33]=[CH:32][C:31]([NH:37][S:38]([C:41]([F:44])([F:43])[F:42])(=[O:40])=[O:39])=[C:30]([C:27](=[N:12][O:11][CH2:10][CH:7]2[CH2:9][CH2:8]2)[CH3:28])[CH:35]=1

Participants

6

Reactant 4

HCID 176Acetic AcidHCID 66053N,N-DimethylethylenediamineHCID 14843102-(cyclopropylmethoxy)-1H-isoindole-1,3(2H)-dioneHCID 67271047N-(2-acetyl-4-chlorophenyl)trifluoromethanesulfonamide

Product 1

HCID 86604000N-[4-chloro-2-(1-cyclopropylmethoxyiminoethyl)phenyl]trifluoromethanesulfonamideYield 81%

Reagents, catalysts & solvents 1

HCID 702EthanolSolvent2×

Procedure

N,N-Dimethylethylenediamine (254 μL, 2.20 mmol) was added to a solution of N-(cyclopropylmethoxy)phthalimide (326 mg, 1.50 mmol) in EtOH (5 mL), and the reaction allowed to stir at RT for 15 h. Glacial acetic acid (2 mL) was then added to adjust the mixture to ca. pH 4 followed by a solution of N-(2-acetyl-4-chlorophenyl)trifluoromethanesulfonamide 19 (302 mg, 1.0 mmol) in EtOH (2 mL), and the mixture stirred for 48 h at RT. The reaction mixture was concentrated under vacuum, and the residue purified by column chromatography (eluting with CH2Cl2/PE, 1:1) to afford N-[4-chloro-2-(1-cyclopropylmethoxyiminoethyl)phenyl]trifluoromethanesulfonamide 187 (300 mg, 81%), as a white solid. M.p. 53-54° C. 1H n.m.r. (400 MHz, CDCl3) δ 11.84, br s, 1H; 7.65, d, J=8.8 Hz, 1H; 7.49, d, J=2.4 Hz, 1H; 7.32, dd, J=2.4 and 8.8 Hz, 1H; 4.03, d, J=7.2 Hz, 2H; 2.34, s, 3H; 1.22, m, 1H; 0.64, m, 2H; 0.34, m, 2H.

Workup

  1. stirringthe mixture stirred for 48 h at RT
  2. concentrationThe reaction mixture was concentrated under vacuum
  3. customthe residue purified by column chromatography (eluting with CH2Cl2/PE, 1:1)

Sources & evidence

ORD record
ord-26650f0db6d943278d7f6bfa0106249d
Source dataset
uspto-grants-2007_12
Patent number
US07312248B2

Reaction notes

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