Synthesis of 1,1,3,4-Tetramethyl-1-sila-2,4-Cyclopentadiene

摘要

The compound 1,1,3,4-tetramethyl-1-sila-3-cyclopentene was obtained through the reaction of 2,3-dimethylbutadiene and dichlorodimethl-silane in THF in the presence of sodium metal. After the bromination of this compound at 0∩ for 2 hrs and dehydrobromination by using a base, we prepared 1,1,3,4-tetramethyl-1-sila-2,4-cyclopentadiene, which could undergo dimerization. The identification has been done by using 1H-, 13C- and C/H-Correlation two dimensional nmr spectroscopies.