Реакция #84801

Уравнение реакции

methyl 2-methoxy-2-(4-nitrophenyl)acetate

→

methyl 2-(4-aminophenyl)-2-methoxyacetate

Выход 77.0%

Растворители

EtOH

EtOAc

Условия реакции

Обработка

1. 1
   workup.WAITby alternately putting under house vacuum and argon three times for several minutes
2. 2
   Фильтрацияfiltered through a pad of Celite and silica gel
3. 3
   КонцентрированиеThe filtrate was concentrated in vacuo
4. 4
   ДругоеPurification by chromatography (25-40% EtOAc-hexanes)

Методика

A solution of methyl 2-methoxy-2-(4-nitrophenyl)acetate (0.42 g, 1.87 mmol) in absolute EtOH (15 mL) was degassed by alternately putting under house vacuum and argon three times for several minutes each then 10% Pd/C (0.19 g) was added. The mixture was stirred under H2 (1 atm.) for 3 hrs then diluted with EtOAc and filtered through a pad of Celite and silica gel. The filtrate was concentrated in vacuo. Purification by chromatography (25-40% EtOAc-hexanes) provided methyl 2-(4-aminophenyl)-2-methoxyacetate as a yellow oil containing impurities (0.6 g from two batches, 77% yield). The compound was used without further purification.

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