2-Bromopyridine → (4-Cyclobutyl-piperazin-1-yl)-(6-pyridin-2-yl-6-aza-spiro[2.5]oct-1-yl)-methanone

Participants

Reaction Conditions

Reaction Steps

Reagents were put in a sealed vial and heated in the microwave oven for 10 minutes at 160°C. According to LC-MS analysis, the conversion is >90%. The crude mixture was transferred to a round-bottomed flask and volatiles were evaporated under vacuum. The residue was purified on preparative HPLC using the long high pH (acetonitrile in water ammonium carbonate buffer, 25 min.) 20 to 40% gradient method on XBridge Prep C18 OBD, 30x150 mm, 5 mm, Waters reverse phase column, giving (4-cyclobutylpiperazin-1-yl)(6-(pyridin-2-yl)-6-azaspiro[2.5]octan-1-yl)methanone (7.20 mg, 9.39 %). However, the compound was not pure enought for submission and there was not enough of it to attempt another purification.

Provenance & Evidence