jo060456k_si_001.pdf (5.72 MB)
A SeCSe−Pd(II) Pincer Complex as a Highly Efficient Catalyst for Allylation of Aldehydes with Allyltributyltin
journal contribution
posted on 2006-07-07, 00:00 authored by Qingwei Yao, Matthew SheetsAn air- and moisture-stable SeCSe−Pd(II) pincer complex
was synthesized and found to catalyze the nucleophilic
allylation of aldehydes with allyltributyltin. The allylation
of a variety of aromatic and aliphatic aldehydes to give the
corresponding homoallyl alcohols was performed at room
temperature to 60 °C in yields ranging from 50% (for typical
aliphatic aldehydes) to up to 97% (for aromatic aldehydes)
using 5 × 10-3 to 1 mol % of the Pd catalyst. NMR
spectroscopic study indicated that a σ-allylpalladium intermediate was formed and possibly functions as the nucleophilic species that undergoes addition to the aldehydes.