Реакция #595380

Уравнение реакции

3-(4-(1-(4-Methoxybenzyl)-1H-tetrazol-5-yl)phenyl)-1H-indazole

3-(4-(1-(4-methoxybenzyl)-1H-tetrazol-5-yl)phenyl)-1H-indazole

t-BuOK

2,6-dichlorobenzoyl chloride

→

(2,6-dichlorophenyl)(3-(4-(1-(4-methoxybenzyl)-1H-tetrazol-5-yl)phenyl)-1H-indazol-1-yl)methanone

Растворители

THF

Условия реакции

Обработка

1. 1
   workup.STIRRINGthe reaction mixture was stirred for another 2 h at room temperature
2. 2
   ДругоеThe solvent was evaporated under reduced pressure
3. 3
   workup.DISSOLUTIONthe residue was dissolved in dichloromethane
4. 4
   Промывкаwashed with water
5. 5
   ДругоеThe organic solvent was evaporated under reduced pressure
6. 6
   Другоеthe residue was dried in vacuo
7. 7
   ДругоеThe product was purified by preparative HPLC

Методика

To a solution of a mixture of regio-isomers of 3-(4-(1-(4-Methoxybenzyl)-1H-tetrazol-5-yl)phenyl)-1H-indazole (Example 20, step i) (50 mg, 0.13 mmol) was dissolved in anhydrous THF (1 ml). After addition of t-BuOK (16 mg, 0.14 mmol,) the reaction mixture was stirred at room temperature for 15 min. Subsequently, 2,6-dichlorobenzoyl chloride (21 μl, 0.14 mmol) was added and the reaction mixture was stirred for another 2 h at room temperature. The solvent was evaporated under reduced pressure, the residue was dissolved in dichloromethane and washed with water, an aqueous solution of 5% K2CO3 and water. The organic solvent was evaporated under reduced pressure and the residue was dried in vacuo. The product was purified by preparative HPLC to afford (2,6-dichlorophenyl)(3-(4-(1-(4-methoxybenzyl)-1H-tetrazol-5-yl)phenyl)-1H-indazol-1-yl)methanone as a mixture of 2 regioisomers in a 98 to 2 ratio (59 mg, 74%).

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