Chemistry Letters, Vol.35, No.1, 114-115, 2006
Synthesis and structure of cis-trans-cis-1,3,5,7-tetraisocyanato-1,3,5,7-tetramethylcyclotetrasilox ane
The controlled hydrolysis of 1,1,3,5.7,7-hexaisocyanato-1,3,5,7-tetramethyltetrasiloxine in tetrahydrofuran gave the desired cyclotetrasiloxane which is expected to be a building block for novel ladder oligosiloxanes with anti configuration, in contrast to the conventional ladder oligosiloxanes with syn configuration.