Synthesis of carbosilane dendrons and dendrimers derived from 1,3,5-trihydroxybenzene

Several carbosilane wedges of generations 1–3 have been synthesized, following the divergent method, containing at the focal point a C–Br bond and as peripheral functional groups SiMeCl2, SiMe(C3H5)2, SiMe2Cl, SiMe2H, and ester units SiMe2{(C3H6)N(C2H4CO2Me)2}. The dendrons functionalized with SiMe(C3H5)2 and SiMe2{(C3H6)N(C2H4CO2Me)2} groups were used to synthesize spherical dendrimers derived from 1,3,5-(HO)3C6H3, leaving the outer groups unchanged. The allyl dendrimers thus obtained were used as precursors to prepare new dendrimers functionalized with SiMeCl2, SiMe2Cl, SiMe2H, amine units SiMe2{(C3H6)NH2} and also ester units SiMe2{(C3H6)N(C2H4CO2Me)2}.

Carbosilane dendrons with a C–Br bond at the focal point and with several peripheral functional groups have been synthesized and used as precursors of spherical dendrimers by coupling with 1,3,5-(HO)3C6H3.Figure optionsDownload as PowerPoint slide