Dimethyl Sulfoxide → 3-Oxo-azetidine-1-carboxylic acid tert-butyl ester

Participants

Reaction Conditions

Reaction Steps

A DMSO (10 mL) solution of a sulfur trioxide-pyridine complex (2.2 g; Ald) was added to a triethylamine (4 mL) solution of 1-Boc-3-(hydroxy)azetidine (500 mg; CNH) at room temperature and the resulting mixture was stirred 50° C. for 2 and half hours. The resulting mixture was stirred for approx. 10 minutes at room temperature, then the reaction mixture was poured into ice water (40 mL) and extracted with ethyl acetate (40 mL), the organic layer was dried, and the solvent was evaporated under reduced pressure to give the title compound (305 mg).

Provenance & Evidence