Synthesis of d-galactose-substituted acylsilanes and acylgermanes. Model compounds for visible light photoinitiators with intriguing high solubility

Abstract

A convenient synthetic method to obtain D-galactose-substituted acylsilanes and acylgermanes is described. These acyl group 14 compounds are easily accessible in good yields. Their structural properties were analyzed by a combination of NMR, single crystal X-ray crystallography, and UV/vis spectroscopy. A D-galactose-substituted tetraacylgermane represents a new interesting visible light photoinitiator based on its absorption properties as well as its high solubility.