Diisopropylethylamine → 6-[N-(5-Chloro-2-(2-methylprop-2-en-1-yloxy)benzyl)-N-ethylamino]pyridazine-3-sulphonamide
Reaction equation
[CH2:1]([NH:3][CH2:4][C:5]1[CH:10]=[C:9]([Cl:11])[CH:8]=[CH:7][C:6]=1[O:12][CH2:13][C:14]([CH3:16])=[CH2:15])[CH3:2].Cl[C:18]1[N:19]=[N:20][C:21]([S:24]([NH2:27])(=[O:26])=[O:25])=[CH:22][CH:23]=1.C(N(C(C)C)C(C)C)C>CN(C=O)C>[Cl:11][C:9]1[CH:8]=[CH:7][C:6]([O:12][CH2:13][C:14]([CH3:16])=[CH2:15])=[C:5]([CH:10]=1)[CH2:4][N:3]([C:18]1[N:19]=[N:20][C:21]([S:24]([NH2:27])(=[O:26])=[O:25])=[CH:22][CH:23]=1)[CH2:1][CH3:2]Participants
Reactant 3
Product 1
Reagents, catalysts & solvents 1
Conditions
- Temperature
- 130 °C
Procedure
A mixture of N-ethyl-5-chloro-2-(2-methylprop-2-en-1-yloxy)benzylamine (2.76 g, 10 mmol), 3-chloro-pyridazine-6-sulphonamide [Archiv der Pharmazie (1966) 299, 646-650 and EP patent no 96,004] (1.5 g, 7.8 mmol) and ethyl di-isopropylamine (10 ml, 57 mM) in DMF (50 ml) was stirred at 130° C. for 16 hours under a reflux condenser. The solvent was evaporated at reduced pressure and the residue partitioned between dichloromethane (100 ml) and water (100 ml). The organic layer was separated, dried over anhydrous magnesium sulphate, filtered and evaporated to give a brown gum (2.5 g). The brown gum was purified by chromatography on silica, eluting with a gradient of 0→20% ethyl acetate in dichloromethane to give the title compound as a yellow solid (600 mg).
Workup
- customThe solvent was evaporated at reduced pressure
- customthe residue partitioned between dichloromethane (100 ml) and water (100 ml)
- customThe organic layer was separated
- dry with materialdried over anhydrous magnesium sulphate
- filtrationfiltered
- customevaporated
Sources & evidence
- ORD record
- ord-2b55a7a92bba4d43b90f9c0df0d36d3a
- Source dataset
- uspto-grants-2000_08
- Patent number
- US06100258
Reaction notes
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