title: A Well-Defined Aluminum-Based Lewis Acid as an Effective Catalyst for Diels-Alder Transformations.
abstract: A catalytically active aluminum-based system for Diels-Alder transformations is reported. The system was generated by mixing a β-diketiminate-stabilized aluminum bistriflate compound with Na[BAr(Cl) 4 (Ar(Cl) =3,5-Cl2 C6 H3). Solid-state analysis of the catalytic system reveals a unique structure incorporating a two-dimensional coordination polymer. According to the experimental results obtained from several Diels-Alder transformations, the aluminum-based system appears to be a more practical and more robust alternative to the recently reported compounds based on carbon and silicon cations.
authors.affiliation: School of Physical and Mathematical Sciences, Department of Chemistry and Biological Chemistry, Nanyang Technological University, 21 Nanyang Link, Singapore 637371, Fax: (+65) 6791-196.
authors.forename: Zhizhou
authors.initials: Z
authors.lastname: Liu
authors.affiliation: School of Physical and Mathematical Sciences, Department of Chemistry and Biological Chemistry, Nanyang Technological University, 21 Nanyang Link, Singapore 637371, Fax: (+65) 6791-196.
authors.forename: Jazreen Hui Qi
authors.initials: JH
authors.lastname: Lee
authors.affiliation: School of Physical and Mathematical Sciences, Department of Chemistry and Biological Chemistry, Nanyang Technological University, 21 Nanyang Link, Singapore 637371, Fax: (+65) 6791-196.
authors.forename: Rakesh
authors.initials: R
authors.lastname: Ganguly
authors.affiliation: School of Physical and Mathematical Sciences, Department of Chemistry and Biological Chemistry, Nanyang Technological University, 21 Nanyang Link, Singapore 637371, Fax: (+65) 6791-196. dvidovic@ntu.edu.sg.
authors.forename: Dragoslav
authors.initials: D
authors.lastname: Vidović
keywords: Diels-Alder reaction; Lewis acids; aluminum; homogeneous catalysis; triflate