Synthesis of Bis(<i>p</i>-aminophenoxy)Dimethylsilane(<i>p</i>-APDS) and its Process Optimization

Abstract

Bis (p-aminophenoxy) dimethylsilane (p-APDS) was prepared by the reaction ofp-aminophenol or 4-acetamidophenol with dimethyldichlorosilane in the presence of triethylamine or pyridine through four different means. The structure of diamines was examined by melting point apparatus, FT-IR and nuclear magnetic resonance apparatus1H-NMR. The productivity, process and cost of four means were compared. The results showed that benzene as a solvent, triethylamine as acid,p-aminophenol and dimethyl dichlorosilane at 40°C for 4h is the most economical and reasonable process for synthesis of bis (p-aminophenoxy) dimethylsilane (p-APDS).