2D-inadequate structural assignment of polybutene oligomers

摘要

The structure of polybutene oligomers has been unambiguously determined using NMR techniques. We used 2D-INADEQUATE to show that the major polybutene isomer synthesized via BF_3 catalysis Has the expected structure with a term-butyl group at the beginning of the chain and the expected Methylvinylidence double bond at the other end. Surprisingly, we found that the main isomer of Polybutene synthesized from AICI_3 catalysis has an isopropyl group at the beginning of the chain.