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Poly(ethylene glycol) Supported Synthesis of Aminoacid Derivatives via Ring Closing Metathesis or Microwave-assisted Alkylation
Published: 11 September 2000 by MDPI in The 4th International Electronic Conference on Synthetic Organic Chemistry session Solid Phase Chemistry and Combinatorial Synthesis
Abstract: Ring closing metathesis has been performed for the first time on a soluble poly(ethylene glycol) supported substrate in the presence of Grubbs' catalyst and provided in good yields 6-, 7- and 8-membered ring aminoacid derivatives. The presence of the polymer required the use of a higher amount of ruthenium complex but the addition of a cofactor such as 1-octene improved the turnover of the catalyst. On the other hand, a Schiff base protected glycine supported on a poly(ethylene glycol) reacted readily with various electrophiles in the presence of an inorganic base under microwave activation.