反应详情

温度

120 °C

A mixture of 3-(5-chloro-2-hydroxy-phenoxy)-azetidine-1-carboxylic acid tert-butyl ester (0.5 mmol), tetrahydro-furan-3-yl-methanol (0.5 mmol), and cyanomethylenetri-n-butylphosphorane (0.5 mmol) in toluene (3 mL) was heated at 120° C. in a microwave reactor for 1 h. The mixture was cooled to rt and purified via PTLC providing 3-[5-chloro-2-(tetrahydro-furan-3-ylmethoxy)-phenoxy]-azetidine-1-carboxylic acid tert-butyl ester (120 mg). To this compound was added CH2Cl2 (20 mL) and TFA (3 mL). After 4 h at rt the mixture was concentrated to give the title compound (161 mg). MS (ESI): mass calcd. for C14H18ClNO3, 283.1; m/z found, 284.0 [M+H]+. 1H NMR (MeOD): 7.05-6.96 (m, 2H), 6.88 (d, J=1.9 Hz, 1H), 5.15-5.05 (m, 1H), 4.57-4.48 (m, 2H), 4.28-4.19 (m, 2H), 4.04-3.88 (m 4H), 3.82-3.70 (m 2H), 2.82-2.70 (m, 1H), 2.20-2.09 (m, 1H), 1.84-1.73 (m, 1H).

1. temperatureThe mixture was cooled to rt
2. custompurified via PTLC