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. 2023 Apr 17;28(8):3524. doi: 10.3390/molecules28083524

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© 2023 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).

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Scheme 24 — (a) Sr(O-ⁱPr)₂ catalysed asymmetric Mannich-type reaction. (b) Bu₂Mg catalyzed reaction of α-isocyanoacetates with N-phosphinoyl ketamine.