Chemistry Letters p. 1669 - 1672 (1991)
Update date:2022-08-03
Topics: Organic synthesis Reductive Coupling Experimental terms Chemical reagent Ytterbium
Takaki, Ken
Nagase, Kyoko
Beppu, Fumikazu
Shindo, Takaaki
Fujiwara, Yuzo
Ytterbium metal promotes reductive coupling of 2-propyn-1-ones (1) to give cyclobutenes and 1,6-dioxo-2,4-hexadiene, whereas 1 is converted to 2,5-dihydrofurans on the treatment with YbCl3-Zn.
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