Tetrahedron Letters,Vol.25,No.45,pp 5181-5182,1984 0040-4039/84 $3.00 + .OO ... Yoshihiko Ikeda and Hisashi Yamamoto* Department of Applied Chemistry, Nagoya University Chikusa, Nagoya 464 ... Summary: -- Deconjugative protonation of (E)-2-alkenoate with bulky alkoxy group using potsssium disilazide as the base gives (z)-3-alkenoate selectively. ... 1x-1 connection with other projects we have seeking a general route to