Pyrrole → (2,6-dichloro-pyridin-3-yl)-(1H-pyrrol-2-yl)-methanone

Titanium (IV) chloride in DCM (10 mL) was added dropwise to a mixture of pyrrole (4 g) and 2,6-dichloro-nicotinoyl chloride (6 g) in DCM (150 mL) at 0° C. The mixture was then stirred at room temperature for 30 mins. The reaction was diluted with water, washed with water (200 mL), 2N NaOH (50 mL) and brine, dried and concentrated. The residue was purified on a silica gel column to give 1.8 g of (2,6-dichloro-pyridin-3-yl)-(1H-pyrrol-2-yl)-methanone and 380 mg of (2,6-dichloro-pyridin-3-yl)-(1H-pyrrol-3-yl)-methanone.

1. washwashed with water (200 mL), 2N NaOH (50 mL) and brine
2. customdried
3. concentrationconcentrated
4. customThe residue was purified on a silica gel column

ORD-Eintrag

ord-6bce0ec7330841a09d18628e21fe18f2

Quelldatensatz

uspto-grants-2007_03

DOI

10.6084/m9.figshare.5104873.v1

Patentnummer

US07186716B2