A Stable and Recoverable Chiral Ru Lewis Acid: Synthesis, Asymmetric Diels–Alder Catalysis and Structure of the Lewis Acid Methacrolein Complex
- 3 May 1999
- journal article
- research article
- Published by Wiley in Angewandte Chemie International Edition in English
- Vol. 38 (9) , 1219-1223
- https://doi.org/10.1002/(sici)1521-3773(19990503)38:9<1219::aid-anie1219>3.0.co;2-d
Abstract
Ease of generation, stablity in solution at ambient temperature, high enantioselectivity in Diels–Alder reactions, efficient catalyst recovery, and large rate differences on variation of the anion are all characteristics of the new Ru Lewis acid [CpRu((S,S)-biphop-F)]+ (biphop-F=(C6F5)2POCH2(Ph)CH2(Ph)OP(C6F5)2). The structure of complex 1 (L=methacrolein, Y=SbF6) provides evidence for a cooperative binding of the dienophile by both the Lewis acid and the anion.This publication has 0 references indexed in Scilit: