From Nonconjugated Diynes to Conjugated Polyenes: Syntheses of Poly(1-phenyl-7-aryl-1,6-heptadiyne)s by Cyclopolymerizations of Asymmetrically α,ω-Disubstituted Alkadiynes
From Nonconjugated Diynes to Conjugated Polyenes: Syntheses of Poly(1-phenyl-7-aryl-1,6-heptadiyne)s by Cyclopolymerizations of Asymmetrically α,ω-Disubstituted Alkadiynes
Palladium-Catalyzed Cross-Coupling of Aryl Electrophiles with Dimethylalkynylaluminum Reagents
作者:Baomin Wang、Martine Bonin、Laurent Micouin
DOI:10.1021/ol048741i
日期:2004.9.1
Alkynyldimethylaluminum reagents are easily available from terminal akynes and trimethylaluminum via a triethylamine-catalyzed metalation. These compounds can react with various aromatic and heterocyclic halides in the presence of palladium in a fast and efficient way. This catalyzed cross-coupling reaction provides a simple entry to numerous internal alkynes, using a readily available, inexpensive, and nontoxic metalating agent.
From Nonconjugated Diynes to Conjugated Polyenes: Syntheses of Poly(1-phenyl-7-aryl-1,6-heptadiyne)s by Cyclopolymerizations of Asymmetrically α,ω-Disubstituted Alkadiynes
作者:Charles C. W. Law、Jacky W. Y. Lam、Yuping Dong、Hui Tong、Ben Zhong Tang