Issue 1, 2003
From the journal:

Organic & Biomolecular Chemistry

Preferential precipitation of C70 over C60 with p-halohomooxacalix[3]arenes

Naoki Komatsu*a  

* Corresponding authors

a Department of Chemistry, Graduate School of Science, Kyoto University, Kitashirakawa, Sakyo-ku, Kyoto 606-8502, Japan

Abstract

Preferential precipitation of C70 from a toluene solution of C60 and C70 was accomplished with p-trihalohomooxacalix[3]arenes (13·X·X·X) prepared by the reductive coupling of diformylphenols. Heavy halogens, Br and/or I, are essential at the para position of 13·X·X·X for obtaining good yields and selectivities. C70 with up to 92% purity was obtained after the preferential precipitation.

Graphical abstract: Preferential precipitation of C70 over C60 with p-halohomooxacalix[3]arenes

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Article information

DOI
https://doi.org/10.1039/B208107E
Article type
Paper
Submitted
19 Aug 2002
Accepted
21 Oct 2002
First published
27 Nov 2002

Org. Biomol. Chem., 2003,1, 204-209

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Preferential precipitation of C70 over C60 with p-halohomooxacalix[3]arenes

N. Komatsu, Org. Biomol. Chem., 2003, 1, 204 DOI: 10.1039/B208107E

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