5-[1-(toluene-4-sulfonyl)-1,2,3,6-tetrahydropyridin-4-yl]-pent-2-ynenitrile

4-but-3-ynyl-1-(toluene-4-sulfonyl)-1,2,3,6-tetrahydropyridine

4-(4-pheny-but-3-ynyl)-1-(toluene-4-sulfonyl)-1,2,3,6-tetrahydropyridine

1-[2-(tert-butyldimethylsiloxy)phenyl]-5-[1-(toluene-4-sulfonyl)-1,2,3,6-tetrahydropyridin-4-yl]-pent-3-yn-1-one

6-[1-(toluene-4-sulfonyl)-1,2,3,6-tetrahydropyridin-4-yl]-hex-3-yn-2-one