2,6-Dibromopyridine → 1-(6-Bromopyridin-2-yl)pyrrolidin-3-ol

Beteiligte Stoffe

Reaktionsschritte

A mixture of 5.7 g of 2,6-dibromopyridine, 2.5 g of 3-hydroxypyrrolidine, 3.6 ml of 1,8-diazbicyclo[5.4.0]-7-undecene (DBU) and 20 ml of tetrahydrofuran was heated under stirring for 11 hours in an oil bath kept at 70° C. The mixture was partitioned between ethyl acetate-water, and the organic layer was washed with water and brine, dried over anhydrous magnesium sulfate and then concentrated. The residue was subjected to silica gel column chromatography using 10-30% ethyl acetate/hexane, to give 5.9 g of 2-bromo-6-(3-hydroxypyrrolidine-1-yl)pyridine.

Herkunft & Nachweise