Chlorambucil → HCID 15634255, compound

Participants

Reaction Conditions

Reaction Steps

Chlorambucil (0.30 g; 0.99 mmol) was suspended in 2 ml of acetone. The resultant mixture was stirred under a nitrogen gas atmosphere and ice-cooling, to which 0.17 ml (1.22 mmol; 1.2 equivalents) of triethylamine and 0.11 ml (1.22 mmol; 1.2 equivalents) of ethyl chloroformate were added successively. Twenty minutes later, a solution of 0.13 g (2.0 mmol; 2.0 equivalents) of sodium azide in 2 ml of water was added dropwise. The resulting mixture was stirred, as was, for 1 hour, to which ice was added to terminate the reaction. The thus-obtained mixture was extracted three times with 20 ml portions of benzene. The benzene layers were combined, dried over sodium sulfate and then heated under reflux for 1 hour. The reaction mixture was concentrated under reduced pressure. The residue was added with 9 ml of 8N hydrochloric acid, followed by heating for 15 minutes at 100° C. The resulting mixture was concentrated under reduced pressure and the residue was diluted with water. The thus-obtained mixture was adjusted to pH 12 with concentrated aqueous ammonia, followed by extraction with ethyl acetate. The extract was dried and concentrated, whereby 0.21 g of the title compound was obtained as a crude yellow oil of high viscosity. This reaction product was provided for use in the next reaction without purification.

Provenance & Evidence