Application of Thiol−Ene Chemistry to the Preparation of Carbosilane−Thioether Dendrimers

The application of thiol−ene chemistry to the synthesis of new carbosilane−thioether dendrimers is presented in this work. The dendrimers are prepared in a divergent fashion starting with tetravinylsilane as a core, followed by a succession of alternating thiol−ene and Grignard reactions. Vinyl-terminated dendrimers up to the fifth generation were isolated in excellent yields (78−94%). Products were characterized by multinuclear NMR spectroscopy, dynamic light scattering, gel permeation chromatography, and MALDI-TOF mass spectrometry.