Water → 2-Phenyl-6,7-dihydro-5H-pyrrolo[1,2-a]imidazole

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Prepare 2-iminopyrrolidine hydrochloride (6.98 g, 57.8 mmol) according to Callahan, et al., J. Med. Chem. 2002, 45, 999-1001) and combine 2-bromoacetophenone (3.8 g, 19.3 mmol) with Na2CO3 (8.2 g, 77.2 mmol) in dry DMF (25 mL) and heat at 80° C. for 18 hours. Then, cool the mixture to room temperature, add water (60 mL), and extract with EtOAc (3×100 mL). Concentrate the combined organic layers in vacuo, dilute the residue with ether (100 mL), and wash with cooled water (3×80 mL). Concentrate the organic layer in vacuo to give a white solid, 3.2 g, 89% yield. MS(ES+): m/z=185.1 (M+H)+

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