Lithium Hexamethyldisilazide → HCID 25005170, compound

Participants

Reaction Steps

Following the general procedure, condensation of 3,5-dichloro-4-methylpyridine (366 mg, 2.26 mmol) with compound 516 (516 mg, 1.74 mmol) in THF (10 mL) in the presence of LiHMDS (5.2 mL, 5.2 mmol) afforded compound 123 as a white solid material after purification by column chromatography (55-65% EtOAc in light petroleum). LC-MS: RT=4.23 min.; m/z 426.24, 428.25 (M+H)+, 424.23 (M−H)−. 1H NMR (CDCl3): δ 8.51 (2H, s), 7.57 (1H, d, J 9.2), 6.71 (1H, d, J 9.2), 4.64 (2H, s), 4.46 (2H, s), 4.33 (2H, s), 3.93 (3H, s), 3.20 (2H, d, J 9.9), 3.12 (2H, d, J 9.9).

Provenance & Evidence