Cesium carbonate → 4-tert-butyl-N-(4-chloro-2-[1,2,3]triazolo[4,5-b]pyridine-1-yl-phenyl)-benzenesulfonamide

HRID 75985Notes

Reaction equation

[C:1]([C:5]1[CH:10]=[CH:9][C:8]([S:11]([NH:14][C:15]2[CH:20]=[CH:19][C:18]([Cl:21])=[CH:17][C:16]=2I)(=[O:13])=[O:12])=[CH:7][CH:6]=1)([CH3:4])([CH3:3])[CH3:2].[NH:23]1[C:27]2[CH:28]=[CH:29][CH:30]=[N:31][C:26]=2[N:25]=[N:24]1.C([O-])([O-])=O.[Cs+].[Cs+].CN[C@@H]1CCCC[C@H]1NC>[Cu]I.O1CCOCC1>[C:1]([C:5]1[CH:10]=[CH:9][C:8]([S:11]([NH:14][C:15]2[CH:20]=[CH:19][C:18]([Cl:21])=[CH:17][C:16]=2[N:23]2[C:27]3[C:26](=[N:31][CH:30]=[CH:29][CH:28]=3)[N:25]=[N:24]2)(=[O:13])=[O:12])=[CH:7][CH:6]=1)([CH3:4])([CH3:3])[CH3:2]

Participants

Conditions

Temperature: 90 °C

Procedure

A 4 mL scintillation vial was charged with 4-tert-butyl-N-(4-chloro-2-iodo-phenyl)-benzenesulfonamide (84 mg, 0.19 mmol), 4-azabenzotriazole (29 mg, 0.22 mmol), CuI (3 mg, 0.014 mmol), Cs2CO3 (127 mg, 0.39 mmol), trans-N,N′-dimethylcyclohexane-1,2-diamine (5 mg, 0.04 mmol), and dioxane (500 μL). The reaction was heated to 90° C. and stirred overnight. The following day, the volatiles were removed in vacuo. The residue was subsequently diluted in EtOAc and washed with saturated NH4Cl (aq). The organic layer was then concentrated in vacuo and the residue purified by preparative TLC (thin-layer chromatography) to afford 4-tert-butyl-N-(4-chloro-2-[1,2,3]triazolo[4,5-b]pyridine-1-yl-phenyl)-benzenesulfonamide: MS (ES) M+H expected 442.1, found 442.0.

Workup

customThe following day, the volatiles were removed in vacuo
additionThe residue was subsequently diluted in EtOAc
washwashed with saturated NH4Cl (aq)
concentrationThe organic layer was then concentrated in vacuo
customthe residue purified by preparative TLC (thin-layer chromatography)

Sources & evidence

ORD record: ord-cafa98523a5c4f5ca92a5b8d549abfd2
Source dataset: uspto-grants-2014_09
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08835468B2

Reaction notes

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