Synthesis 2024; 56(10): 1576-1584
DOI: 10.1055/a-2062-8680
paper
C–H Bond Functionalization of Heterocycles

Oxidative C–N Bond Cleavage of Cyclic Amines with Ammonium Hypochlorite

Yuya Kaieda
a   Graduate School of Biomedical Sciences, Nagasaki University, 1-14 Bunkyo-Machi, Nagasaki 852-8521, Japan
,
a   Graduate School of Biomedical Sciences, Nagasaki University, 1-14 Bunkyo-Machi, Nagasaki 852-8521, Japan
,
Hiroyuki Toguchi
a   Graduate School of Biomedical Sciences, Nagasaki University, 1-14 Bunkyo-Machi, Nagasaki 852-8521, Japan
,
Natsumi Hanazawa
a   Graduate School of Biomedical Sciences, Nagasaki University, 1-14 Bunkyo-Machi, Nagasaki 852-8521, Japan
b   Tsukuba Research Laboratories, Tokuyama Corporation, 40 Wadai, Tsukuba, Ibaraki 300-4247, Japan
,
a   Graduate School of Biomedical Sciences, Nagasaki University, 1-14 Bunkyo-Machi, Nagasaki 852-8521, Japan
,
Osamu Onomura
a   Graduate School of Biomedical Sciences, Nagasaki University, 1-14 Bunkyo-Machi, Nagasaki 852-8521, Japan
› Author Affiliations
This research was supported by the Japan Society for the Promotion of Science (JSPS KAKENHI: 22K06528, 22K15255, and 19K05459).


Abstract

An oxidative C–N bond cleavage of cyclic amines has been developed under metal-free conditions, providing N-Cl-ω-amino acids in moderate to excellent yields. The reactions proceed by using tetramethylammonium hypochlorite (TMAOCl) as an oxidant even on a gram scale. Hofmann–Löffler–Freytag-type reaction of N-Cl-ω-amino acids to form cyclic amino acids has also been demonstrated.

Supporting Information



Publication History

Received: 31 January 2023

Accepted after revision: 27 March 2023

Accepted Manuscript online:
27 March 2023

Article published online:
24 April 2023

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