6-Azabicyclo[3.2.1]octanes<i>via</i>Copper-Catalyzed Enantioselective Alkene Carboamination
作者:Barbara J. Casavant、Azade S. Hosseini、Sherry R. Chemler
DOI:10.1002/adsc.201400317
日期:2014.8.11
carboamination reaction that creates bridged heterocycles is reported herein. Two new rings are formed in this alkene carboamination reaction where N-sulfonyl-2-aryl-4-pentenamines are converted to 6-azabicyclo[3.2.1]octanes using [Ph-Box-Cu](OTf)2 or related catalysts in the presence of MnO2 as stoichiometric oxidant in moderate to good yields and generally excellent enantioselectivities. Two new stereocenters
含氮杂环的桥联双环是生物活性有机小分子中的重要基序。本文报道了产生桥连杂环的对映选择性铜催化的烯烃碳氨基化反应。在该烯烃碳氨基化反应中形成两个新环,其中使用[Ph-Box-Cu](OTf)2或相关催化剂,将N-磺酰基-2-芳基-4-戊烯胺转化为6-氮杂双环[3.2.1]辛烷。 MnO2作为化学计量氧化剂的存在,产率中等至良好,通常具有出色的对映选择性。反应中形成两个新的立体中心,而形成CC键的芳烃添加是净CH功能化。