Visible-Light-Mediated Addition of Phenacyl Bromides onto Cyclopropenes
2017
Dange, Nitin S. | Hussain Jatoi, Ashique | Robert, Frédéric | Landais, Yannick
Visible-light-promoted addition of α-bromoacetophenones onto the cyclopropene π-system in the presence of the fac-Ir(ppy)₃ catalyst was shown to afford the corresponding 1(4H)-naphthalenones. The syn-carboarylation of the cyclopropene is followed by a cyclopropane ring opening under the basic conditions, allowing the formation of two C–C bonds and the generation of 1(4H)-naphthalenones bearing an all-carbon benzylic quaternary stereocenter.
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