Cyclobuta[1,2-d]benzyne. Generation, trapping, and dimerization to 2,3:6,7-dicyclobutabiphenylene
作者:R. L. Hillard、K. P. C. Vollhardt
DOI:10.1021/ja00428a031
日期:1976.6
Cyclobuta(1,2-d)benzyne has been generated from 4,5-bromoiodobenzocyclobutene and magnesium or butyllithium. The transient reactive species can be trapped with furan as the Diels--Alder adduct. In the absence of trapping agents dimerization occurs to 2,3:6,7-dicyclobutabiphenylene, a novel strained benzenoid hydrocarbon with distinctly olefinic properties.
Substituted benzocyclobutenes, indans, and tetralins via cobalt-catalyzed cooligomerization of .alpha.,.omega.-diynes with substituted acetylenes. Formation and synthetic utility of trimethylsilylated benzocycloalkenes
作者:R. L. Hillard、K. Peter C. Vollhardt
DOI:10.1021/ja00454a026
日期:1977.6
HILLARD R. L.; VOLLHARDT K. P. C., J. AMER. CHEM. SOC. <JACS-AT>, 1976, 98, NO 12, 3579-3583