Conformation of 1, 4-Dineopentyl-2, 5-cis-diphenylpiperazine and Its Diammonium Salts: Remarkable Change in Conformation Depending upon the Counter Anion

Kiyosei TAKASU; Kiyoshi TANAKA; Kaoru FUJI

doi:10.1248/cpb.49.655

Communications to the Editor

Conformation of 1, 4-Dineopentyl-2, 5-cis-diphenylpiperazine and Its Diammonium Salts: Remarkable Change in Conformation Depending upon the Counter Anion

Kiyosei TAKASU, Kiyoshi TANAKA, Kaoru FUJI

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Keywords: 2,5-disubstituted piperazine, conformation, piperazinium salt, ¹H-NMR spectrum

JOURNAL FREE ACCESS

2001 Volume 49 Issue 5 Pages 655-656

DOI https://doi.org/10.1248/cpb.49.655

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Abstract

The free base of 1, 4-dineopentyl-2, 5-diphenylpiperazine takes a chair conformation in CDCl₃, while the conformation of its diammonium salts changes depending upon the counter anion.

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