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Template‐Directed Ring‐Closing Metathesis: Synthesis and Polymerization of Unsaturated Crown Ether Analogs
Author(s) -
Marsella Michael J.,
Maynard Heather D.,
Grubbs Robert H.
Publication year - 1997
Publication title -
angewandte chemie international edition in english
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 0570-0833
DOI - 10.1002/anie.199711011
Subject(s) - romp , metathesis , ring opening metathesis polymerisation , acyclic diene metathesis , ring closing metathesis , polymerization , depolymerization , chemistry , olefin metathesis , ether , catalysis , polymer chemistry , crown ether , polymer , organic chemistry , ion
A highly efficient combination: template directing and olefin metathesis. The polyether dienes 1 react in good yields to give crown ethers 2 in the presence of LiClO 4 and the Ru catalyst 3 (Cy = cyclohexyl). Ring‐opening metathesis polymerization (ROMP) of the cyclic olefins 2 results in polymers that are capable of regenerating 2 by template‐directed methathesis depolymerization.