ISSN:
0025-116X
Keywords:
Chemistry
;
Polymer and Materials Science
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
,
Physics
Notes:
Rate constants and equilibrium constants were determined for the addition of 1,1-diphenylethylene to living trimers of 2-vinylpyridine in THF having either a meso or a racemic diad adjacent to the carbanion center. The racemic isomer was shown to be slightly more reactive (≈40%) compared with the meso isomer and slightly less than the corresponding dimer. The living dimer of 2-vinylpyridine in turn is slightly more reactive than the meso trimer, but is five times less reactive compared to the lithio salt of 2-ethylpyridine. The changes in equilibrium constant were quite dramatic, the constant for lithio-2-ethylpyridine being about 100-200 times larger than for the living oligomers and about 2 600 times larger than that of the living polymer.
Additional Material:
3 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/macp.1989.021900212
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