Download full text in PDF Opens in a new window. Article suggestions will be shown in a dialog on return to ScienceDirect. ... Please enable JavaScript to use all the features on this page. ... The reaction of ketenealkylsilylacetals with ethyl propiolate in the presence of different Lewis acids is reported to give Michaël-type additions or a [2+2] cycloaddition. ... Products were isolated by work-up under standard conditions and were characterized by 1 H and 13 C, NMR, IR, ...
