Synthesis of Bicyclo[<i>n</i>
.1.0]alkanes by a Cobalt-Catalyzed Multiple C(sp<sup>3</sup>
)−H Activation Strategy
作者:Zhuo-Zhuo Zhang、Ye-Qiang Han、Bei-Bei Zhan、Sai Wang、Bing-Feng Shi
DOI:10.1002/anie.201707638
日期:2017.10.9
cobalt‐catalyzed dual C(sp3)−H activationstrategy has been developed and it provides a novel strategy for the synthesis of bicyclo[4.1.0]heptanes and bicyclo[3.1.0]hexanes. A key to the success of this reaction is the conformation‐induced methylene C(sp3)−H activation of the resulting cobaltabicyclo[4.n.1] intermediate. In addition, the synthesis of bicyclo[3.1.0]hexane from pivalamide, by a triple C(sp3)−H activation
Cycloaddition reaction of some representative 1-cyclopropyl-1,3-butadienes with tetracyanoethylene and reaction of the resultant vinylcyclobutanes. An easy vinylcyclobutane-cyclohexene rearrangement