Highly Enantioselective Brønsted Acid Catalyzed Heyns Rearrangement

Autor:	Jin Cao, Yu‐Xuan Su, Xin‐Yu Zhang, Shou‐Fei Zhu
Rok vydání:	2022
Předmět:	Molecular Structure Stereoisomerism General Chemistry General Medicine Protons Amines Catalysis
Zdroj:	Angewandte Chemie. 135
ISSN:	1521-3757 0044-8249
Popis:	Herein we report the first method for highly enantioselective Brønsted acid catalyzed Heyns rearrangements. These reactions, catalyzed by a chiral spiro phosphoric acid, afforded synthetically valuable chiral α-aryl-α-aminoketones which cannot be obtained by means of previously reported Heyns rearrangement methods. This method features low catalyst loadings, high yields and high enantioselectivities, making these reactions highly practical. We used the method to efficiently synthesize various chiral amines, including some biologically active molecules. We experimentally proved that these acid-catalyzed Heyns rearrangements proceeded via a proton-transfer process involving an enol intermediate and the stereocontrol was realized during the proton-transfer step.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::379d5522d7de5f1ead5747248b249312 https://doi.org/10.1002/ange.202212976 Zobrazit plný text záznamu Plný text