Polystyrene-bound cyclo-BINOLs. New heterogeneous ligands for asymmetric catalysis

Authors
Lipshutz, BH Shin, YJ
Citation
Bh. Lipshutz et Yj. Shin, Polystyrene-bound cyclo-BINOLs. New heterogeneous ligands for asymmetric catalysis, TETRAHEDR L, 41(49), 2000, pp. 9515-9521
Citations number
28
Categorie Soggetti
Chemistry & Analysis","Organic Chemistry/Polymer Science
Journal title
TETRAHEDRON LETTERS
ISSN journal
00404039 → ACNP
Volume
41
Issue
49
Year of publication
2000
Pages
9515 - 9521
Database
ISI
SICI code
0040-4039(200012)41:49<9515:PCNHLF>2.0.ZU;2-V
Abstract
BINOL and substituted BINOLs, which have been tethered between the 7 and 7' sites (i.e.'cyclo-BINOLs'), can be attached via this linkage to polystyren e resins using a simple acetalization. Efficacy associated with these new l igands is demonstrated in heterogeneous asymmetric catalysis (e.g. aryl alk yl sulfide oxidations, and 1,2-additions of Et2Zn to aryl aldehydes). (C) 2 000 Elsevier Science Ltd. All rights reserved.