Triethylamine → 2-Tert-butyldimethylsilyoxy-5-nitro-benzo[de]isoquinoline-1,3-dione

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Reaction Steps

Triethyl amine (0.4 g, 4.0 mmol) and tert-butyldimethylsilyl chloride (0.6 g, 4.0 mmol) were added to a solution of 2-hydroxy-5-nitro-benzo[de]isoquinoline-1,3-dione (1.0 g, 3.9 mmol, from Example 1) in chloroform (10 mL). The mixture was stirred at room temperature for 3 hours and concentrated in vacuo to give a dark residue. Column chromatography (silica gel 2% methanol in chloroform) gave 1.1 g of the title compound.

Provenance & Evidence