Reaction #3745260
Related Literature (1)
openreactiondata ↗doi:10.6084/m9.figshare.5104873.v1; patent:US08754214B2
Conditions: temp:15.01; pressure:0.00; stir:; See reaction.notes.procedure_details.
Procedure: A reactor was charged with [(2R)-2-pyrrolidinylmethyl]amine (0.75 kg) and 4.6 L of DMF was added followed by 0.45 kg of glacial acetic acid. Acetonitrile (41.4 L) was then added and the mixture was agitated for 15 minutes. To the reaction mixture was added methyl 5-bromo-1-(2,2-dihydroxyethyl)-4-oxo-3-[(phenylmethyl)oxy]-1,4-dihydro-2-pyridinecarboxylate (2.30 kg). After stirring for 20 minutes at ambient temperature, the mixture was heated at 75-85° C. until the bromide starting material was consumed by HPLC analysis (about 6 hrs). Upon completion, the mixture was cooled until the refluz subsided and then charged with 6.9 L of methanol and the mixture was heated at reflux for about 45 minutes then cooled to 15° C. and filtered and dried to provide (4aS,13aR)-8-bromo-10-[(phenylmethyl)oxy]-2,3,4a,5,13,13a-hexahydro-1H-pyrido[1,2-a]pyrrolo[1′,2′:3,4]imidazo[1,2-d]pyrazine-9,11-dione (1.93 kg, 78%) as a white solid.). 1H NMR (300 MHz, DMSO-d6) δ ppm 8.65 (m, 1H), 7.54 (m, 2H), 7.33 (m, 3H), 5.15 (d, 1H), 4.99 (d, 1H), 4.60 (m, 1H), 4.36 (m, 1H), 4.03 (m, 1H), 3.90 (m, 1H), 3.65 (m, 1H), 3.06-2.84 (m, 3H), 1.92-1.60 (m, 4H). was added After stirring for 20 minutes at ambient temperature was consumed by HPLC analysis (about 6 hrs) Upon completion, the mixture was cooled until the refluz charged with 6.9 L of methanol the mixture was heated at reflux for about 45 minutes filtered dried
Source ID: ord-6084a3eec52c4c51a0204cbf5541aa49