Reaktion #49403

Reaktionsgleichung

4-hydroxy-7-[1-(tert-butoxycarbonyl)-5-(piperidinomethyl)indol-2-yl]isoindolinone

triphenylphosphine

DEAD toluene

2-isopropoxyethanol

→

4-(2-isopropoxyethoxy)-7-[1-(tert-butoxycarbonyl)-5-(piperidinomethyl)indol-2-yl]isoindolinone

Ausbeute 59.0%

Lösungsmittel

THF

Reaktionsbedingungen

Aufarbeitung

1. 1
   Sonstigefollowed by purification by flash column chromatography (chloroform/methanol=4/1)

Vorschrift

In a similar manner to Step 1 of Example 149, 4-hydroxy-7-[1-(tert-butoxycarbonyl)-5-(piperidinomethyl)indol-2-yl]isoindolinone (0.102 g, 0.221 mmol) was dissolved in THF (5.1 mL), and the solution was treated with triphenylphosphine (0.116 g, 0.442 mmol), 40% DEAD-toluene solution (0.201 mL, 0.442 mmol) and 2-isopropoxyethanol (0.126 mL, 1.10 mmol), followed by purification by flash column chromatography (chloroform/methanol=4/1) to obtain 4-(2-isopropoxyethoxy)-7-[1-(tert-butoxycarbonyl)-5-(piperidinomethyl)indol-2-yl]isoindolinone (0.0677 g, yield 59%).

Quelle