Synthesis of ladder and cage silsesquioxanes from 1,2,3,4- tetrahydroxycyclotetrasiloxane

Article abstract of DOI:10.1246/bcsj.73.215

The versatility of cis,cis,cis-1,3,5,7-tetrahydroxy-1,3,5,7- tetraisopropylcyclotetrasiloxane (1) as a precursor of cage and ladder siloxanes is presented. Compound 1 reacted with 1,3-dichloro-1,1,3,3- tetraisopropyldisiloxane in pyridine to give 1,3,5,5,