Enantioselective Copper-Catalysed Propargylic Substitution: Synthetic Scope Study and Application in Formal Total Syntheses of (+)-Anisomycin and (−)-Cytoxazone
作者:Remko J. Detz、Zohar Abiri、Remi le Griel、Henk Hiemstra、Jan H. van Maarseveen
DOI:10.1002/chem.201003727
日期:2011.5.16
indoles excellent ee values were obtained (up to 98 % ee). The versatility of the propargylic amines obtained was demonstrated by their further elaboration to formaltotalsyntheses of the antibiotic (+)‐anisomycin and the cytokine modulator (−)‐cytoxazone.
Well-defined chiral dinuclear copper complexes in enantioselective propargylic substitution: For a long-standing supposition on binuclear mechanism
作者:Qilong Cai、Houqiang Rao、Shi-Jun Li、Yu Lan、Kuiling Ding、Xiaoming Wang
DOI:10.1016/j.chempr.2023.09.006
日期:2024.1
frequently been proposed as active intermediates. Herein, we report a series of binuclear copper catalysts supported by chiral benzo [c] cinnoline dioxazoline frameworks, which demonstrated high efficiency in (dynamic) kinetic resolution of propargylic alcohol derivativesvia propargylic substitution. Mechanistic investigations suggested that the binuclear Cu core shows a bifunctional role in coordination with
作者:Remko J. Detz、Mariëlle M. E. Delville、Henk Hiemstra、Jan H. van Maarseveen
DOI:10.1002/anie.200705264
日期:2008.5.5
Enantioselective Synthesis of Propargylamines through Zr-Catalyzed Addition of Mixed Alkynylzinc Reagents to Arylimines
作者:John F. Traverse、Amir H. Hoveyda、Marc L. Snapper
DOI:10.1021/ol035138b
日期:2003.9.1
[reaction: see text] Addition of mixed alkynylzinc reagents to various arylimines is catalyzed by chiral amino acid-based ligand 1 and Zr(Oi-Pr)(4).HOi-Pr to afford chiral propargylamines in up to 90% ee. Oxidative removal of the o-anisidyl group affords the free amine, which can then be acylated.