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 ZnCl 2 promoted addition of 1,2-diethoxy-1,2-disilyloxyethylene 1 with electrophiles such as aldehydes, ketones, α,β-unsaturated ketones or tertiary alkyl halides allows for a simple synthesis of α-ketoesters. ... Tetrahedron Lett. (1978), p. 375 and references in these articles.