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

HRID 502807Notes

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-6c3b87d0b8a04971972f1feb9ace6a8e
Source dataset: uspto-grants-2010_08
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US07776877B2

Reaction notes

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