Norbornyl vinyl

The deshielding of the vinylic carbon atoms in the norbornyl cations 13, 55-57, 62 and 77 compared to the precursor compounds was taken as evidence for the intramolecular coordination of the C=C double bond to the electron-deficient element atom." ° This high-frequency shift, is largest for the silanorbornyl... 

Enholm [13] has also described the synthesis of soluble designer supports by the ring-opening metathesis polymerization (ROMP) of norbornyl derivatives. Reduction of norbornene-l-carboxaldehyde 88 to the corresponding alcohol 89, followed by treatment with either 2-bromopropionic acid or 2-bromo-2-phenylacetic acid in the presence of DCC, provided the esters 90 or 91 respectively (Scheme 19). Polymerization of 90 and 91 was carried out with Grubbs catalyst and halted after 25 s by capping with excess ethyl vinyl ether to give polymers 92 and 93 respectively. 

In di-ft-acetato-bis-(2-methylallyl-3 norbornyl)dipalladium(ii) (Figure 7) each metal atom is surrounded by two oxygen atoms from different acetate groups, a o-bonded carbon atom, and the vinyl end of the hydrocarbon side-chain. The metal atoms are joined together through acetate bridges, the Pd-Pd distance being 2.96... 

Xiao F, Shen D, Zhang X, Hu S and Xu M (1987) Studies on the morphology of blends of poly(vinyl chloride) and segmented polyurethanes, Polymer 28 2335-2345. Ahn T 0, Han K T, Jeong H M and Lee S W (1992) Miscibility of thermoplastic polyurethane elastomers with chlorine-containing polymers, Polymer 33 115-120. Flory P J (1953) Principles of Polymer Chemistry, Cornell University Press, Ithaca. Jeon H G, Mather P T and Haddad T S (2000) Shape memory and nanostructure in poly(norbornyl-poss) copolymers, Polym Int 49 453-457. 

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