Scheme 4. Expanded scope using new coupling partners.a.
aYields are of purified product; diastereoselectivities determined by 1H NMR spectroscopy; 18-crown-6 added as 1M solution in THF. b>10:1 alkene E:Z ratios observed. cReaction performed at 60 °C. dCorresponding 4-phenylsulfonyl pyridine used as substrate. eArCN (1 equiv), organosilane (1.2 equiv) and acrylamide (1-2 equiv) used.