Lanthanum tris(trifluoromethanesulfonate) → HCID 89852314, compound

Participants

Reaction Conditions

Reaction Steps

To a solution of (2S)-tert-butyl 5-hydroxy-4-(hydroxymethyl)-2-(isopropyldimethylsilyl)oxy)methyl)-5,6-dihydropyridine-1(2H)-carboxylate (Intermediate 117, 13.0 g, 34.99 mmol) in toluene (150 mL) was added 4-methoxybenzyl 2,2,2-trichloroacetimidate (7.65 mL, 10.42 g, 36.74 mmol) and La(OTf)3 (205 mg, 0.35 mmol). The mixture was stirred at 50° C. for 4 h. Aqueous work-up with ethyl acetate and the organic layer was dried over MgSO4 to afford the crude product.

Provenance & Evidence