Synthesis 2021; 53(19): 3573-3577
DOI: 10.1055/a-1526-7657
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Convenient Synthesis of (R)-3-[(tert-Butoxycarbonyl)amino]piperidine and (R)-3-[(tert-Butoxycarbonyl)amino]azepane

Renat Kadyrov
a   Institute of Inorganic Chemistry, Academy of Sciences of the Czech Republic, 25068 Řež, Czech Republic
b   Evonik Resource Efficiency GmbH, Rodenbacher Chaussee 4, 63457 Hanau, Germany
,
Oleg L. Tok
a   Institute of Inorganic Chemistry, Academy of Sciences of the Czech Republic, 25068 Řež, Czech Republic
› Author Affiliations


Abstract

(R)-3-[(tert-Butoxycarbonyl)amino]piperidine and (R)-3-[(tert-butoxycarbonyl)amino]azepane were prepared in two steps starting from d-ornithine and d-lysine, respectively. In the key step, N-Boc-protected 3-aminolactams were converted into imido esters by O-alkyl­ation and then hydrogenated to amines, under mild conditions (5 bar H2, room temperature) and without isolation, over a standard hydrogenation catalyst (5% Pt/C).

Supporting Information



Publication History

Received: 21 May 2021

Accepted: 10 June 2021

Accepted Manuscript online:
10 June 2021

Article published online:
13 July 2021

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