Hydrazine hydrate (1:1) → HCID 57834058, compound

Participants

Reaction Conditions

Reaction Steps

2-[1-(Azulen-1-yl)ethyl]-isoindole-1,3-dione (16.8 g) prepared in Example 72, Step B was dissolved in ethanol (400 mL), added with hydrazine monohydrate (3.1 g, Wako Pure Chemical Industries), and stirred at 30° C. for 72 hours. The solid was removed by filtration, and the filtrate was concentrated under reduced pressure. The residue was added with saturated aqueous sodium hydrogencarbonate, and extracted with chloroform. The organic layer was dried over anhydrous sodium sulfate, and the solvent was evaporated under reduced pressure. The residue was purified by NH silica gel chromatography (NH-DM1020, Fuji Silysia, hexane:ethyl acetate=3:1-1:1) to obtain 9.26 g of the title compound.

Provenance & Evidence