Transition-metal-catalyzed annulation reactions of difluorocyclopropenes with alkynes or N,N-dialkylformamides and homocoupling reaction of difluorocyclopropenes have been realized under mild conditions. These reactions tolerate a range of functional groups, furnishing the corresponding products in moderate to good yields. In addition, isotope labeling experiment shows that water indeed involves in these reactions as an important component. (C) 2022 Published by Elsevier Ltd.
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