Piperazine → HCID 131734484, compound

Participants

Reaction Conditions

Reaction Steps

A flask equipped with a stirrer, reflux condenser, dropping funnel and thermometer was charged with 189.4 g (2.2 mol) of piperazine, 200 ml of xylene, and 1.0 g (0.01 mol) of methanesulfonic acid and heated at 130° C. Once the internal temperature became steady, 192.8 g (1.0 mol) of triisopropylchlorosilane was added dropwise over 2 hours. Stirring was continued for 10 hours at the temperature. The reaction solution was cooled to room temperature, to which 500 g of a 10 wt % sodium hydroxide aqueous solution was added. The organic layer was separated. On distillation, 132.6 g of a fraction having a boiling point of 109-111° C./0.4 kPa was collected, which was 1-triisopropylsilylpiperazine.

Provenance & Evidence