1433869-90-9Relevant academic research and scientific papers
Gold-catalyzed cyclization of allenyl acetal derivatives
Vasu, Dhananjayan,Pawar, Samir Kundlik,Liu, Rai-Shung
, p. 1751 - 1756 (2013/10/22)
The gold-catalyzed transformation of allenyl acetals 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 4 via a degradation of the acetate group at the allyl cation intermediate.
Gold-catalyzed cyclization-cycloaddition cascade reactions of allenyl acetals with nitrones
Vasu, Dhananjayan,Liu, Rai-Shung
, p. 13638 - 13641 (2013/01/15)
Gold and silver: When allenyl acetals and nitrones are treated with a catalytic amount of a gold complex and a silver salt they react through a cyclization-cycloaddition cascade reaction to give a mixture of diastereomeric tricyclic products. The mixture converges to a single product upon acid hydrolysis (see scheme). The key intermediate is postulated to be a 1-methoxyfulvene species. Copyright
