Реакция #42139

Уравнение реакции

biphenyl-2-ylcarbamic acid 1-[2-(4-aminomethylphenylcarbamoyl) ethyl]piperidin-4-yl ester

4-aminobenzyl alcohol

HATU

DIPEA

DIPEA

DMSO

→

title intermediate

Выход 66.0%

Biphenyl-2-ylcarbamic Acid 1-[2-(4-Formylphenylcarbamoyl)ethyl]piperidin-4-yl Ester

Выход 66.0%

Растворители

DCM

DCM

Условия реакции

Обработка

1. 1
   Промывкаwashed first with a 1:3 mixture of 1N HCl/water (100 mL)
2. 2
   СушкаThe organic layer was dried over MgSO4
3. 3
   Фильтрацияfiltered
4. 4
   Концентрированиеconcentrated
5. 5
   workup.DISSOLUTIONThe residue was dissolved in DCM (100 mL)
6. 6
   Температураthe solution was cooled to −5° C
7. 7
   workup.STIRRINGThe reaction mixture was stirred at 0° C. for 1 hour
8. 8
   Промывкаthen washed with a saturated solution of sodium bicarbonate (100 mL) and brine (100 mL)
9. 9
   СушкаThe organic layer was dried over MgSO4
10. 10
    Фильтрацияfiltered
11. 11
    Концентрированиеconcentrated

Методика

A mixture of biphenyl-2-ylcarbamic acid 1-[2-(4-aminomethylphenylcarbamoyl) ethyl]piperidin-4-yl ester (1 g, 2.7 mmol; prepared as described in Preparation 14), 4-aminobenzyl alcohol (498 mg, 4.05 mmol), HATU (1.54 g, 4.05 mmol) and DIPEA (1.41 mL, 8.1 mmol) in DCM (14 mL) was stirred at room temperature for 2 hours. The reaction mixture was diluted with 100 mL of DCM and washed first with a 1:3 mixture of 1N HCl/water (100 mL), then brine (100 mL). The organic layer was dried over MgSO4, filtered and concentrated. The residue was dissolved in DCM (100 mL) and the solution was cooled to −5° C. DIPEA (1.1 mL, 6.33 mmol) and DMSO (1.5 mL, 21.1 mmol) were added to the solution, followed by sulfur trioxide pyridine complex (1 g, 6.33 mmol). The reaction mixture was stirred at 0° C. for 1 hour then washed with a saturated solution of sodium bicarbonate (100 mL) and brine (100 mL). The organic layer was dried over MgSO4, filtered and concentrated to give 0.84 g of the title intermediate (66% yield) as an oil.

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