Gold-catalyzed cyclization of allenyl acetal derivatives
作者:Dhananjayan Vasu、Samir Kundlik Pawar、Rai-Shung Liu
DOI:10.3762/bjoc.9.202
日期:——
The gold-catalyzed transformation of allenylacetals into 5-alkylidenecyclopent-2-en-1-ones is described. The outcome of our deuterium labeling experiments supports a 1,4-hydride shift of the resulting allyl cationic intermediates because a complete deuterium transfer is observed. We tested the reaction on various acetal substrates bearing a propargyl acetate, giving 4-methoxy-5-alkylidenecyclopent-2-en-1-ones