CYCLOTRIMERIZATION AND POLYMERIZATION OF 1-HEXYNE CATALYZED BY GROUP 5, 6 TRANSITION METAL CHLORIDES.

Article abstract of DOI:10.1246/bcsj.56.2798

1-Hexyne could be cyclotrimerized selectively and quantitatively by NbCl//5 and TaCl//5. The cyclotrimer formed consisted of 1,2,4- and 1,3,5-isomers. The 1,2,4/1,3,5 isomer ratio of the product was about 70/30-80/20 with NbCl//5, and about 55/45-70/30 wi