Nickel-Catalyzed Chemo- and Enantioselective Coupling between Cyclobutanones and Allenes: Rapid Synthesis of [3.2.2] Bicycles
作者:Xuan Zhou、Guangbin Dong
DOI:10.1002/anie.201609489
日期:2016.11.21
Herein an intramolecular nickel‐catalyzed (4+2) coupling between cyclobutanones and allenes, by C−C cleavage, is reported. The reaction provides a distinct approach for accessing [3.2.2] bicyclic scaffolds which are challenging to prepare through conventional approaches. The reaction is efficient, chemoselective, and pH/redox neutral. Room temperature conditions and low catalyst loadings can be adopted
本文报道了环丁酮和丙二烯之间通过 C−C 裂解进行的分子内镍催化 (4+2) 偶联。该反应提供了一种独特的方法来获取[3.2.2]双环支架,而通过传统方法制备双环支架具有挑战性。该反应高效、化学选择性且 pH/氧化还原呈中性。可以采用室温条件和低催化剂负载量。还实现了优异的对映选择性。