Palladium-catalyzed silaborative carbocyclizations of 1,6-diynes
Literature Information
Qian Zhang, Qiu-Ju Liang, Jian-Lin Xu, Yun-He Xu
An addition/cyclization reaction of 1,6-diynes was developed for the synthesis of highly substituted 1,2-dialkylidenecycloalkanes. In this work, 1,6-diynes reacted with (dimethylphenylsilyl)pinacol-borane in the presence of a palladium catalyst to afford 1,2-dialkylidenecycloalkanes bearing silyl and boryl groups with a (Z,Z)-configuration in good to excellent yields. Moreover, the corresponding products could be easily converted into other synthetically useful compounds. This protocol provides an efficient and practical method of heteroelement–element linkage addition to the unsaturated 1,6-diynes.
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Chemical Communications
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