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Towards a generalization of stereospecific nucleophilic substitution of PVC
Author(s) -
Millán J.,
Martínez G.,
Mijangos C.,
Méndez A.,
GómezElvira J. M.,
GómezDaza M.
Publication year - 1988
Publication title -
makromolekulare chemie. macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 0258-0322
DOI - 10.1002/masy.19880200110
Subject(s) - stereospecificity , nucleophile , chemistry , nucleophilic substitution , cyclohexanone , substitution (logic) , yield (engineering) , substitution reaction , tacticity , kinetics , degree (music) , polymer , organic chemistry , materials science , catalysis , polymerization , physics , quantum mechanics , computer science , acoustics , programming language , metallurgy
Two series of nucleophilic substitution reactions on PVC using either the same nucleophile but different experimental conditions or various nucleophiles in cyclohexanone (CH) dilute solutions, were performed. The evolution of unreacted iso‐, hetero‐and syndiotactic triads with degree of conversion was followed by 13 C NMR. While the kinetics and yield changed markedly with both the type of nucleophile and the reaction conditions the stereochemical structure of modified polymers proved to depend only on degree of substitution. These results afford further support to a conformational mechanism of substitution, as proposed by earlier works.