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Synthesis and Structure of [4.5.5.5]Fenestranes ( = tetracyclo[5.4.1.04, 12.09, 12]dodecanes)

✍ Scribed by Daniel Hirschi; Wolfgang Luef; Peter Gerber; Reinhart Keese

Publisher
John Wiley and Sons
Year
1992
Tongue
German
Weight
774 KB
Volume
75
Category
Article
ISSN
0018-019X

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✦ Synopsis

a) (CH30)z P-CH=C-CHzBr (3) NaH/THF b) 2N HCI C) (Bu~N) OH tolueneiH20 H 4a ('exo')

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## Abstract The ^13^C NMR spectra of tricyclo[4.2.1.0^2,5^]nonanes and tetracyclo[5.4.1.0^2,6^.0^8,11^]dodecanes and their dimethyl derivatives were measured to demonstrate the four‐membered ring annelation effects on the bicyclo[2.2.1]heptane skeleton, and the steric δ‐__syn__ effects of the methy