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Issue 30, 2015
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Synthesis and unique reversible splitting of 14-membered cyclic aminomethylphosphines on to 7-membered heterocycles

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Abstract

A novel type of 14-membered cyclic polyphosphine, namely 1,8-diaza-3,6,10,13-tetraphosphacyclotetradecanes 2a–4a has been synthesized by the condensation of 1,2-bis(phenylphosphino)ethane, formaldehyde and alkylamines (isopropylamine, ethylamine and cyclohexylamine) as a RRRR/SSSS-stereoisomer. The structure of macrocycle 2a was investigated by NMR-spectroscopy and X-ray crystal structure analysis. The unique reversible processes of macrocycles 2a–4a splitting onto the corresponding rac- (2b–4b) and meso- (2c–4c) stereoisomers of 1-aza-3,6-diphosphacycloheptanes were discovered.

Graphical abstract: Synthesis and unique reversible splitting of 14-membered cyclic aminomethylphosphines on to 7-membered heterocycles

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Article information


Submitted
21 May 2015
Accepted
15 Jun 2015
First published
16 Jun 2015

This article is Open Access

Dalton Trans., 2015,44, 13565-13572
Article type
Paper
Author version available

Synthesis and unique reversible splitting of 14-membered cyclic aminomethylphosphines on to 7-membered heterocycles

E. I. Musina, T. I. Fesenko, I. D. Strelnik, F. M. Polyancev, S. K. Latypov, P. Lönnecke, E. Hey-Hawkins, A. A. Karasik and O. G. Sinyashin, Dalton Trans., 2015, 44, 13565
DOI: 10.1039/C5DT01910A

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