Reaktion #8626

Reaktionsgleichung

2-[3-[2-(tert-butyldimethylsilanyloxy)ethyl]-4-(2-nitrobenzene-sulfonyl)-2-oxo-piperazin-1-yl]-N-methyl-3-naphthalen-2-yl propionamide

trifluoroacetic acid

→

desired product

2-{3-[2-(tert-Butyldimethylsilanyloxy)ethyl]-2-oxo-piperizin-1-yl}-N-methyl-3-naphthalen-2-yl-propionamide

Lösungsmittel

dichloromethane

Reaktionsbedingungen

Aufarbeitung

1. 1
   Einengenconcentrated in vacuo
2. 2
   workup.DISSOLUTIONThe crude product is dissolved in dichloromethane
3. 3
   Waschenthe organic layer washed with saturated sodium bicarbonate
4. 4
   Sonstigedried
5. 5
   Einengenconcentrated in vacuo

Vorschrift

2-[3-[2-(tert-butyldimethylsilanyloxy)ethyl]-4-(2-nitrobenzene-sulfonyl)-2-oxo-piperazin-1-yl]-N-methyl-3-naphthalen-2-yl propionamide, 57, (6.5 g, 10 mmol), trifluoroacetic acid (5 mL), and dichloromethane (50 mL) is stirred at room temperature for 2 hours and then concentrated in vacuo. The crude product is dissolved in dichloromethane and the organic layer washed with saturated sodium bicarbonate, dried, and concentrated in vacuo to afford the desired product.

Quelle