Pyrrolidine → 2-Benzyloxy-6-(pyrrolidin-1-yl)-benzo[de]isoquinoline-1,3-dione

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Reaction Steps

Pyrrolidine (3 mL) was added to 2-benzyloxy-6-bromo-benzo[de]isoquinoline-1,3-dione (0.8 g, 2.1 mmol, from Example M) in the presence of DBU (0.05 mL). The mixture was refluxed for 2 hours and poured into water (50 mL). The precipitate formed was filtered and dried to give 0.8 g of 2-benzyloxy-6-(pyrrolidin-1-yl)-benzo[de]isoquinoline-1,3-dione. The hydrogenation of 2-benzyloxy-6-(pyrrolidin-1-yl)-benzo[de]isoquinoline-1,3-dione (0.4 g, 1.1 mmol) in the presence of 10% Pd/C (0.2 g) in DMA (30 mL) gave 0.27 g of the title compound, mp 268-270° C.;

Provenance & Evidence