_P.-Powell-auth.-Principles-of-Organometallic-Chemistry-Springer-Netherlands-1988

Problems
Z. The proton n.m.r. spectrum of Z consists of four bands with areas in the ratio
3:2:2:1.
Suggest structures for X, Y, and Z.
(University of St Andrews).
8. Give structures for the unknown compounds in the following reaction
sequence explaining your reasoning.
EtO
III
EtO~
(University of Leicester).
HCI
1. >--MgBr
2. HCI,
H20
c
C 11 H 20 OSi
9. In the following sequence o ne racemic diastereoisomer of Fis formed. Give a
structure for F and predict its relative stereochemistry from the subsequent
transformations; give a structure for G.
Explain the reasoning behind your answers.
1.LiNPr~
2.MeCHO
Me~SiMe3
ne<, j )l"c,
~~~- ~
SiMe3
Mu=J
G(C 7 H10 0)
(University of Leicester).
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