PaaSiCats: Novel polyamino acid catalysts
2000; Wiley; Volume: 12; Issue: 5-6 Linguagem: Inglês
10.1002/(sici)1520-636x(2000)12
ISSN1520-636X
AutoresAnupma Dhanda, Karlheinz Drauz, Thomas Geller, Stanley M. Roberts,
Tópico(s)Synthetic Organic Chemistry Methods
ResumoThe 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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