Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/66095
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Title: C,O-Chelated BINOL/Gold(III) complexes : synthesis and catalysis with tunable product profiles
Authors: Cui, JF 
Ko, HM 
Shing, KP 
Deng, J 
Lai, CHN 
Wong, MK 
Issue Date: 6-Mar-2017
Source: Angewandte chemie international edition, 6 Mar. 2017, v. 56, no. 11, p. 3074-3079
Abstract: Unprecedented stable BINOL/gold(III) complexes, adopting a novel C,O-chelation mode, were synthesized by a modular approach through combination of 1,1′-binaphthalene-2,2′-diols (BINOLs) and cyclometalated gold(III) dichloride complexes [(C^N)AuCl2]. X-ray crystallographic analysis revealed that the bidentate BINOL ligands tautomerized and bonded to the AuIII atom through C,O-chelation to form a five-membered ring instead of the conventional O,O′-chelation giving a seven-membered ring. These gold(III) complexes catalyzed acetalization/cycloisomerization and carboalkoxylation of ortho-alkynylbenzaldehydes with trialkyl orthoformates.
Keywords: Chelates
Gold
Isomerization
Ligand effects
Structure elucidation
Publisher: Wiley-VCH
Journal: Angewandte chemie international edition 
ISSN: 1433-7851
EISSN: 1521-3773
DOI: 10.1002/anie.201612243
Rights: © 2017 Wiley‐VCH Verlag GmbH & Co. KGaA, Weinheim
This is the peer reviewed version of the following article: J.-F. Cui, H.-M. Ko, K.-P. Shing, J.-R. Deng, N. C.-H. Lai, M.-K. Wong, Angew. Chem. Int. Ed. 2017, 56, 3074, which has been published in final form at https://doi.org/10.1002/anie.201612243. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions.
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