Helvetica chimica acta

Preparation of polystyrene beads with dendritically embedded TADDOL and use in enantioselective Lewis acid catalysis

H Sellner, PB Rheiner, D Seebach

文献索引：Sellner, Holger; Rheiner, P. Beat; Seebach, Dieter Helvetica Chimica Acta, 2002 , vol. 85, # 1 p. 352 - 387

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被引用次数: 67

摘要

A full account is given of the preparation and use of TADDOLates, which are dendritically incorporated in polystyrene beads (Scheme 1). A series of styryl-substituted TADDOLs with flexible, rigid, or dendritically branching spacers between the TADDOL core and the styryl groups (2±16 in number) has been prepared (5±7, 20, 21, 26 in Schemes 2±4 and Fig. 1±3). These were used as cross-linkers in styrene-suspension polymerization, leading to beads ...