ISSN:
0025-116X
Keywords:
Chemistry
;
Polymer and Materials Science
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
,
Physics
Notes:
All the side-reactions of a hydrosilylating model system (1-allyloxy-3-phenoxy-2-propanol/. . .-Si(CH3)2H in the presence of hexachloroplatinic acid (CPA); R = [CPA]/[SiH] 〉 10-4) are identified by 13C and 1H NMR. In such conditions the vinyl ether isomers and the residual silanes, formed when R 〈 10-4, are changed into several new species. The most important side-reaction consists in a silane-alcohol condensation (secondary alcohol of the model and, to a much lower extent, tertiary alcohol(tert-butyl alcohol) used as solvent of CPA), which leads to silyloxygrafted moieities. Hydrogen formed in this condensation can partially saturate the vinyl ether isomers the remaining fraction of which is cyclized into a 2-ethyl-1,3-dioxolane derivative. All the side-reactions observed in the case of the model system take place when α,β-diallyloligosulfones are polycondensated with α-dimethylsilyl-ω-hydrooligosiloxanes.
Additional Material:
9 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/macp.1989.021901111
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