The selective head-to-tail dimerization of α-hydroxy terminal acetylenes
1984; Science Press; Volume: 26; Issue: 3 Linguagem: Inglês
10.1016/0304-5102(84)85110-x
ISSN1873-3131
Autores Tópico(s)Synthetic Organic Chemistry Methods
ResumoPalladium complexes containing phosphonite ligands, prepared in situ, have been shown to oligomerize terminal acetylenes. The catalysts are particularly effective for those acetylenes containing α-hydroxyl groups. The presence of cuprous iodide enhances the reaction rate and promotes the selectivity to dimer relative to higher oligomers. Only the head-to-tail dimers are found. Cross-dimerization is also discussed.
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