A convenient access to cyclic fluoroketones that involves base-promoted ring-opening of siloxydifluorocyclopropanes is presented. Selective formation of gem-difluorinated cycloalkanones and monofluorinated enones has been achieved.
Last of the<i>gem</i>‐Difluorocycloalkanes 2: Synthesis of Fluorinated Cycloheptane Building Blocks
作者:Maksym Herasymchuk、Kostiantyn P. Melnykov、Dmytro V. Yarmoliuk、Dmytro Serhiichuk、Valeriia Rotar、Timur Pukhovoi、Yuliya O. Kuchkovska、Sergey Holovach、Dmitriy M. Volochnyuk、Sergey V. Ryabukhin、Oleksandr O. Grygorenko
DOI:10.1002/ejoc.202001530
日期:2021.12.21
gem-difluorocycloheptane derivatives were obtained in two to six synthetic steps from readily available starting materials. The developed synthetic approaches were shown to be efficient for a multigram-scale synthesis of target compounds and involved six-membered ring homologation and/or deoxofluorination reactions as the key steps.