ISSN:
0025-116X
Keywords:
Chemistry
;
Polymer and Materials Science
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
,
Physics
Notes:
Among numerous polymers with cyclic polyethers and non-cyclic ethers as anchor groups, the condensation resin with dibenzo-18-crown-6 as anchor group (℗-DB-18-C-6), which can be easily prepared, exhibits the best properties for phase-transfer catalysis. It catalyses substitution, dichlorocarbene and polymerisation reactions which do not take place at all or only in a low yield without the catalyst. For substitution reaction the highest yields are up to 95% in the liquid phase and up to 70% in the gaseous phase. For chlorocarbene reactions yields up to 76% are reached. For the polymerisation of 2-pyrrolidone, started by potassium 2-pyrrolidonate, the yield is at 80%.
Additional Material:
6 Tab.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/macp.1982.021830605
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