Synthesis 2022; 54(23): 5192-5202
DOI: 10.1055/a-1922-8846
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Transition-Metal-Free N-Arylation of N-Methoxysulfonamides and N,O-Protected Hydroxylamines with Trimethoxyphenyliodonium (III) Acetates

a   College of Pharmaceutical Sciences, Ritsumeikan University, 1-1-1, Nojihigashi, Kusatsu Shiga 525-8577, Japan
,
Aki Morita
a   College of Pharmaceutical Sciences, Ritsumeikan University, 1-1-1, Nojihigashi, Kusatsu Shiga 525-8577, Japan
,
Elghareeb E. Elboray
a   College of Pharmaceutical Sciences, Ritsumeikan University, 1-1-1, Nojihigashi, Kusatsu Shiga 525-8577, Japan
b   Department of Chemistry, Faculty of Science, South Valley University, Qena 83523, Egypt
,
Taeho Bae
a   College of Pharmaceutical Sciences, Ritsumeikan University, 1-1-1, Nojihigashi, Kusatsu Shiga 525-8577, Japan
,
Naoki Miyamoto
a   College of Pharmaceutical Sciences, Ritsumeikan University, 1-1-1, Nojihigashi, Kusatsu Shiga 525-8577, Japan
,
Yasuyuki Kita
c   Research Organization of Science and Technology, Ritsumeikan University, 1-1-1, Nojihigashi, Kusatsu Shiga 525-8577, Japan
,
a   College of Pharmaceutical Sciences, Ritsumeikan University, 1-1-1, Nojihigashi, Kusatsu Shiga 525-8577, Japan
c   Research Organization of Science and Technology, Ritsumeikan University, 1-1-1, Nojihigashi, Kusatsu Shiga 525-8577, Japan
› Author Affiliations
This work was partially supported by JSPS KAKENHI grant numbers 19K05466 (T.D.) and 18H02014 (K.K.) and JST CREST grant number JPMJCR20R1. T.D. also acknowledges support from the Ritsumeikan Global Innovation Research Organization (R-GIRO) project.


Abstract

Trimethoxyphenyliodonium(III) acetate [TMP-iodonium(III) acetate] functions as an efficient arylation reagent for N,O-protected hydroxylamines, generating aniline derivatives in the absence of transition metal catalysts. Various N-methoxysulfonamides participated in the amination reaction to produce the corresponding N-methoxysulfonylanilines. This amination reaction was compatible with several protecting groups, including Troc (2,2,2-trichloroethoxycarbonyl), Cbz (benzyloxycarbonyl), Boc (tert-butoxycarbonyl), benzyl, acetyl, and silyl groups. This method uses TMP-iodonium(III) acetate and efficiently synthesizes various aniline derivatives that are versatile synthetic intermediates for functional organic molecules.

Supporting Information



Publication History

Received: 05 July 2022

Accepted after revision: 11 August 2022

Accepted Manuscript online:
11 August 2022

Article published online:
23 September 2022

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