6-chloro-2,3-difluorobenzaldehyde

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: The title compound was prepared from 6-chloro-3-fluoro-2-methoxybenzaldehyde following the procedures for the synthesis of 5-bromo-3-[1-(2-chloro-3-fluoro-6-methoxyphenyl)ethyl]-1H-pyrrolo[2,3-b]pyridine from 2-chloro-3-fluoro-6-methoxybenzaldehyde, vide supra. 6-Chloro-3-fluoro-2-methoxybenzaldehyde was prepared from the known 6-chloro-2,3-difluorobenzaldehyde by reaction with sodium methoxide in methanol. 1H NMR (300 MHz, CDCl3): δ=1.78 (d, J=7.2 Hz, 3H), 3.44 (brs, 3H), 4.94 (q, J=7.2 Hz, 1H), 6.93 (dd, J=9.0, 9.0 Hz, 1H), 7.09 (dd, J=8.7, 4.5 Hz, 1H), 7.30 (s, 1H), 7.71 (d, J=1.5 Hz, 1H), 8.28 (d, J=1.5 Hz, 1H), 9.68 (brs, 1H).