CC BY-NC-ND 4.0 · Synthesis 2023; 55(11): 1706-1713
DOI: 10.1055/a-1948-5493
paper
Special Issue dedicated to Prof. Cristina Nevado, recipient of the 2021 Dr. Margaret Faul Women in Chemistry Award

Enantioselective β-Selective Addition of Isoxazolidin-5-ones to Allenoates Catalyzed by Quaternary Ammonium Salts

a   Institute of Organic Chemistry, Johannes Kepler University Linz, Altenbergerstrasse 69, 4040 Linz, Austria
,
Katharina Röser
a   Institute of Organic Chemistry, Johannes Kepler University Linz, Altenbergerstrasse 69, 4040 Linz, Austria
,
Daniel Chrenko
b   Department of Chemical Biology, Faculty of Science, Palacký University, Šlechtitelů 27, 783 71 Olomouc, Czech Republic
,
b   Department of Chemical Biology, Faculty of Science, Palacký University, Šlechtitelů 27, 783 71 Olomouc, Czech Republic
c   Laboratory of Growth Regulators, Palacký University & Institute of Experimental Botany AS CR, Šlechtitelů 27, 783 71 Olomouc, Czech Republic
,
Mario Waser
a   Institute of Organic Chemistry, Johannes Kepler University Linz, Altenbergerstrasse 69, 4040 Linz, Austria
› Author Affiliations
This work was generously supported by the Austrian Science Funds (FWF) Project P31784. The used NMR spectrometers were acquired in collaboration with the University of South Bohemia (CZ) with financial support from the European Union through the EFRE INTERREG IV ETC-AT-CZ program (project M00146, ‘RERI-uasb’). J.P. was supported from European Regional Development Fund Project ‘Centre for Experimental Plant Biology’ (No. CZ.02.1.01/0.0/0.0/16_019/0000738).


Dedicated to Prof. Cristina Nevado on the occasion of her reception of the 2021 Dr. Margaret Faul Women in Chemistry Award (and thanks for being one of the best friends one can imagine ever since we wrestled with the Iejimalides Cris!!).

Abstract

The enantioselective addition of isoxazolidin-5-ones to the β-carbon of allenoates has been carried out by using a novel spirobiindane-based quaternary ammonium salt catalyst. This protocol, which proceeds under classical liquid-solid phase-transfer conditions, gives access to unprecedented highly functionalized β2,2-amino acid derivatives with good enantioselectivities and in high yields, and further manipulations of these products have been carried out as well.

Supporting Information



Publication History

Received: 09 August 2022

Accepted: 21 September 2022

Accepted Manuscript online:
21 September 2022

Article published online:
27 October 2022

© 2022. The Author(s). This is an open access article published by Thieme under the terms of the Creative Commons Attribution-NonDerivative-NonCommercial-License, permitting copying and reproduction so long as the original work is given appropriate credit. Contents may not be used for commercial purposes or adapted, remixed, transformed or built upon. (https://creativecommons.org/licenses/by-nc-nd/4.0/)

Georg Thieme Verlag KG
Rüdigerstraße 14, 70469 Stuttgart, Germany