Molecular and Crystal Structures of Bispidine Conjugates and Tempo Radicals

IF 1.4 4区 化学 Q4 CHEMISTRY, INORGANIC & NUCLEAR Journal of Structural Chemistry Pub Date : 2025-03-28 DOI:10.1134/S0022476625030205
A. V. Medved′ko, A. M. Zakirov, M. E. Minyaev, E. V. Tretyakov, S. Z. Vatsadze
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Abstract

Molecular and crystal structures of the following bispidine conjugates with stable TEMPO radicals and their synthetic precursors are described for the first time: 4-(2-bromacetoamido)-2,2,6,6-tetramethylpiperidine-1-oxyl (2), tert-butyl-3,7-diazabicyclo[3.3.1]nonan-3-carboxylate (4), 2-(1-oxyl-2,2,6,6-tetramethylpiperidine-4-yl)acetamide (3,7-diazabicyclo[3.3.1]nonan-3-carboxylate (6) and 2,2′-(1,5-dimethyl-3,7-diazabicyclo[3.3.1]nonan-3,7-diyl)bis[N-(2,2,6,6-tetramethyl-1-oxyl-piperidine-4-yl)acetamide] (7). These conjugates are prepared by the alkylation of bispidines using TEMPO bromo-derivatives.

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比斯必定共轭物和Tempo自由基的分子和晶体结构
本文首次报道了下列具有稳定TEMPO自由基的比斯必定缀合物及其合成前体的分子和晶体结构:4-(2-溴甲乙二胺)-2,2,6,6-四甲基哌啶-1-氧基(2),叔丁基-3,7-重氮杂环壬烷-3-羧酸盐(4),2-(1-氧基-2,2,6,6-四甲基哌啶-4-基)乙酰胺(3,7-重氮杂环壬烷-3-羧酸盐(6)和2,2 ' -(1,5-二甲基-3,7-重氮杂环壬烷-3-羧酸盐(3.3.1)壬烷-3,7-二基)二[N-(2,2,6,6-四甲基-1-氧基哌啶-4-基)乙酰胺](7)。这些缀合物是通过使用TEMPO溴衍生物将比必啶烷基化而制备的。
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来源期刊
Journal of Structural Chemistry
Journal of Structural Chemistry 化学-无机化学与核化学
CiteScore
1.60
自引率
12.50%
发文量
142
审稿时长
8.3 months
期刊介绍: Journal is an interdisciplinary publication covering all aspects of structural chemistry, including the theory of molecular structure and chemical bond; the use of physical methods to study the electronic and spatial structure of chemical species; structural features of liquids, solutions, surfaces, supramolecular systems, nano- and solid materials; and the crystal structure of solids.
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