Rhodium-catalyzed cycloaddition of 1,6-enynes with 2-bromophenylboronic acids: synthesis of a multi-substituted dihydronaphthalene scaffold
作者:Xianjie Fang、Chaolong Li、Xiaofeng Tong
DOI:10.1039/b910532h
日期:——
A formal [2 + 2 + 2] cycloaddition of a 1,6-enyne with 2-bromophenylboronic acid has been realized to construct a multi-substituted dihydronaphthalene scaffold, in which the direct reductive elimination mechanism of aryl-Rh(III)-Csp3 species has been established to form an aryl-Csp3 bond.
Phosphazene Base-Catalyzed Intramolecular Cascade Reactions of Aryl-Substituted Enynes
作者:Jin-Heng Li、Jian-Sheng Tang、Ye-Xiang Xie、Zhi-Qiang Wang、Chen-Liang Deng
DOI:10.1055/s-0030-1258172
日期:2010.9
A novel method for the synthesis of 9-aryl-3a,4-dihydronaphtho[2,3-c]furan-1(3H)-ones has been developed by P4-t-Bu-catalyzed intramolecular cascade reactions of enynes. In the presence of a catalytic amount of phosphazene P4-t-Bu base, a variety of 3-arylallyl 3-arylpropiolates underwent the cascade cyclization reaction smoothly in moderate to excellent yields.