PaaSiCats: novel polyamino acid catalysts |
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| Authors: | Dhanda A Drauz K H Geller T Roberts S M |
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| Affiliation: | Department of Chemistry, Liverpool University, Liverpool, UK. |
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| Abstract: | The abilities of five polyamino acids (Paa's) to catalyse the asymmetric epoxidation of enones 1-7 under three sets of reaction conditions were compared: polyneo-pentylglycine and polyleucine showed distinct advantages in most circumstances. All five polymers were adsorbed onto silica and from this further study, immobilised polyneo-pentylglycine (PLNSi) and polyleucine (PLLSi) were shown to be the catalysts of choice for the asymmetric epoxidation of less-reactive alpha,beta-unsaturated ketones. |
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