Gold(III)-Catalyzed Intramolecular Furanylation and Cyclopropanation of Acyclic Conjugated Enynones
作者:Chang Oh、Lanhua Piao、Ji Kim
DOI:10.1055/s-0032-1317926
日期:——
furanylation–cyclopropanation of acyclic (E)-deca-2,9-dien-4-yn-1-ones and an (E)-undeca-2,10-dien-4-yn-1-one to give 1-(2-furyl)bicyclo[3.1.0]hexanes and a 1-(2-furyl)bicyclo[4.1.0]heptane, respectively. This requires a configurational change from the E-isomer to the Z-isomer prior to furan formation. The intermediate was proposed to be a gold–carbene, which would undergo cyclopropanation to furnish the product.
摘要 我们已经开发出了一种高效的级联金催化的呋喃基化-无环(E)-deca-2,9-dien-4-yn-1- one和一个(E)-undeca-2,10-dien-4-yn环丙烷化-1-分别得到1-(2-呋喃基)双环[3.1.0]己烷和1-(2-呋喃基)双环[4.1.0]庚烷。这要求在呋喃形成之前从E-异构体到Z-异构体的构型变化。提出的中间体是金卡宾,可进行环丙烷化以提供产品。 我们已经开发出了一种高效的级联金催化的呋喃基化-无环(E)-deca-2,9-dien-4-yn-1- one和一个(E)-undeca-2,10-dien-4-yn环丙烷化-1-分别得到1-(2-呋喃基)双环[3.1.0]己烷和1-(2-呋喃基)双环[4.1.0]庚烷。这要求在呋喃形成之前从E-异构体到Z-异构体的构型变化。提出的中间体是金卡宾,可进行环丙烷化以提供产品。