p-(Trifluoromethoxy)benzenesulphonyl chloride → N-[7-(4-Trifluoromethoxy-benzenesulfonylamino)-3,4-dihydro-2H-pyrano[3,2-b]pyridin-3-yl]-propionamide

HRID 870370Notes

Reaction equation

HRID 870370 reaction equation
[NH2:1][C:2]1[CH:3]=[C:4]2[O:11][CH2:10][CH:9]([NH:12][C:13](=[O:16])[CH2:14][CH3:15])[CH2:8][C:5]2=[N:6][CH:7]=1.[F:17][C:18]([F:31])([F:30])[O:19][C:20]1[CH:25]=[CH:24][C:23]([S:26](Cl)(=[O:28])=[O:27])=[CH:22][CH:21]=1>C(Cl)Cl.N1C=CC=CC=1>[F:31][C:18]([F:17])([F:30])[O:19][C:20]1[CH:25]=[CH:24][C:23]([S:26]([NH:1][C:2]2[CH:3]=[C:4]3[O:11][CH2:10][CH:9]([NH:12][C:13](=[O:16])[CH2:14][CH3:15])[CH2:8][C:5]3=[N:6][CH:7]=2)(=[O:28])=[O:27])=[CH:22][CH:21]=1

Participants

4

Reactant 2

HCID 523102p-(Trifluoromethoxy)benzenesulphonyl chlorideHCID 68912527N-(7-amino-3,4-dihydro-2H-pyrano[3,2-b]pyridin-3-yl)propionamide

Product 1

HCID 68914768N-[7-(4-Trifluoromethoxy-benzenesulfonylamino)-3,4-dihydro-2H-pyrano[3,2-b]pyridin-3-yl]-propionamideYield 47%

Reagents, catalysts & solvents 1

HCID 21875418Pyridine methylene chlorideSolvent

Procedure

A portion of the raw N-(7-amino-3,4-dihydro-2H-pyrano[3,2-b]pyridin-3-yl)propionamide (100 mg, 0.45 mmol) was dissolved in CH2Cl2/pyridine 9/1 (20 ml) and 4-(trifluoromethoxy)benzenesulfonyl chloride (100 μl, 0.58 mmol) was added dropwise. After stirring at room temperature over night, the reaction mixture was concentrated and the purification of the residue by chromatography on silica gel (CH2Cl2:CH3OH, 97:3) gave the title compound (94 mg, 47% for steps 31.4 and 31.5) as a gum.

Workup

  1. concentrationthe reaction mixture was concentrated
  2. customthe purification of the residue by chromatography on silica gel (CH2Cl2:CH3OH, 97:3)

Sources & evidence

ORD record
ord-43abe4bff7e74e6b96acf01df0990428
Source dataset
uspto-grants-2015_03
Patent number
US08969552B2

Reaction notes

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