Synthesis and characterization of dialkyl carbonates prepared from mid-, long-chain, and guerbet alcohols

摘要

A series of organic carbonates derived from mid-, long-chain, and Guerbet alcohols were synthesized in good yield (69–80% isolated yields after purification by distillation or recrystallization) though a carbonate interchange reaction by heating the linear or Guerbet alcohols with diethyl carbonate in the presence of catalyst, n-dibutyltin oxide. The carbonates were isolated by Kügelrohr distillation or recrystallization from acetone and characterized using FTIR, GC, 1H and 13C NMR spectroscopy, and GC-MS. El and positive Cl mass-spectral techniques were used to characterize the carbonates. Such materials are currently of commercial interest as lubricants and additives in various industrial applications.