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 aldol product from an α-PhS aldehyde, formed with high Cram and (aldol) selectivity, was transformed by PhS migration into the title compound: the compound was made by a Claisen-Ireland rearrangement. ... Stereospecific Phs migration gave the title compound: ...