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位阻保护吡咯烷氮氧自由基的合成与还原动力学。

Synthesis and reduction kinetics of sterically shielded pyrrolidine nitroxides.

机构信息

Department of Chemistry, University of Nebraska, Lincoln, Nebraska 68588-0304, USA.

出版信息

Org Lett. 2012 Oct 19;14(20):5322-5. doi: 10.1021/ol302506f. Epub 2012 Oct 10.

DOI:10.1021/ol302506f
PMID:23050653
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC3486517/
Abstract

A series of sterically shielded pyrrolidine nitroxides were synthesized, and their reduction by ascorbate (vitamin C) indicate that nitroxide 3, a tetraethyl derivative of 3-carboxy-PROXYL, is reduced at the slowest rate among known nitroxides, i.e., at a 60-fold slower rate than that for 3-carboxy-PROXYL.

摘要

合成了一系列空间位阻保护的吡咯烷氮氧自由基,并通过抗坏血酸(维生素 C)还原实验表明,3-羧基-PROXYL 的四乙基衍生物 3 是所有已知氮氧自由基中还原最慢的,即比 3-羧基-PROXYL 慢 60 倍。

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