Zirconocene-Mediated Macrocyclizations of Diynes Containing Di-<i>o</i>-Methylphenylene Spacers
作者:Adam D. Miller、Jennifer L. McBee、T. Don Tilley
DOI:10.1021/jo802715m
日期:2009.4.3
The diynes 3,3′,5,5′-tetramethyl-4,4′-di(pent-1-ynyl)biphenyl (4) and 3,3′′,5,5′′-tetramethyl-4,4′′-di(hex-1-ynyl)terphenyl (9) undergo coupling with Cp2Zr(η2-Me3SiC≡CSiMe3)(py) to give dimeric macrocycles in moderate yields (16% for 4 and 26% for 9).