2-Chloromethyl 2-(trimethylsilyl)ethyl ether → HCID 86651953, compound

Participants

Reaction Conditions

Reaction Steps

To a solution of 4-bromo-1H-indazole-6-carbaldehyde (225 mg, 1 mmol) in CH2Cl2 (10 mL) and aqueous KOH (2 mL, 50% wt) at 0° C. was added TBAB (3 mg, 0.01 mmol) and SEMCl (200 mg, 1.2 mmol). The mixture was stirred at 0° C. for 4 h, warmed to rt and extracted with ethyl acetate (100 mL). The organic phase was washed with water (2×10 mL) and brine (10 mL), dried over MgSO4 and concentrated. The residue was purified by silica gel chromatography (1:1 EtOAc/Hex) to give the title compound as a pale yellow solid (280 mg, 82%). 1H NMR (400 MHz, CD3OD) δ 10.02 (s, 1H), 8.21-8.19 (m, 2H), 7.80 (s, 1H), 5.78 (s, 2H), 3.70-3.65 (m, 2H), 0.95-0.92 (m, 2H), −0.05 (s, 9H).

Provenance & Evidence