Rotational behavior of exo-[1,1,3-tris(trimethylsilyl)allyl]lithium
ORGANOMETALLICS（1990）
摘要
The title compound, 3, has been generated by metalation of (E)-1,3,3-tris(trimethylsilyl)-1-propene with butyllithium [ 6 Li] in pentane-TMEDA at room temperature. NMR establishes the exo structure of 3 under all conditions used. Compound 3 in THF with 1 equiv of TMEDA exhibits a barrier to rotation about the C 1 C 2 bond of ΔH + =17 kcal and ΔS + is +25 eu
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