Sodium Bisulfate → HCID 178455196, compound

Participants

Reaction Steps

To a mixture of methyl (2E)-4-[tert-butyl(dimethyl)silyl]oxy-2-[[2-(4-cyanopyridin-2-yl)hydrazinyl]methylidene]butanoate (3.3 g, 8.77 mmol) in ethanol (50 mL) at 0° C. was added t-BuOK (2.95 g, 26.33 mmol). The reaction mixture was stirred overnight at r.t. It was then cooled to 0° C., diluted with ethyl acetate, and acidified with NaHSO4 (5%) to pH=3. The organic phase was separated and concentrated to a residue which was washed with PE/EA to give 300 mg of the title compound (10%). 1H NMR (400 MHz, CD3OD): δ 0.00 (6H, s), 0.85 (9H, s), 2.49 (2H, d, J=6.4 Hz), 3.74 (2H, d, J=6.4 Hz), 7.48 (1H, dd, J=1.2 Hz, 4.8 Hz), 7.60 (1H, s), 8.57 (1H, d, J=4.8 Hz), 8.61-8.63 (1H, m). [M+H] Calc'd for C17H24N4O2Si, 345; Found, 345.

Provenance & Evidence