Nickel-Catalyzed Regioselective [2+2+2] Cycloaddition of Carboryne with Alkynes
作者:Zaozao Qiu、Sunewang R. Wang、Zuowei Xie
DOI:10.1002/anie.201001249
日期:2010.6.21
A View [2+2+2] a Kill: For the first time, nickel‐catalyzed [2+2+2] cycloaddition reactions of alkynes or diynes with carboryne using 1‐iodo‐2‐lithiocarborane as a precursor have been achieved. The mechanism is proposed after the structural confirmation of the key intermediate, nickelacyclopentene.
Nickel-Mediated Regioselective [2 + 2 + 2] Cycloaddition of Carboryne with Alkynes
作者:Liang Deng、Hoi-Shan Chan、Zuowei Xie
DOI:10.1021/ja061605j
日期:2006.6.1
complexes have found many applications in organic synthesis, mechanistic studies, and the synthesis of functional materials. In sharp contrast, the chemistry of transition metal-carboryne complexes, especially late transition metal complexes, is virtually unknown. This communication reports a novel nickel-mediated regioselective [2 + 2 + 2] cycloaddition reaction of carboryne with alkynes via the Ni-carboryne