(+)-trans-Pinononic acid: hydrogen-bonding patterns in a non-racemic δ-keto acid

Autor:	Roger A. Lalancette, Hugh W. Thompson, Andrew P. J. Brunskill, Alan Barcon
Rok vydání:	1999
Předmět:	Hydrogen bond Chemistry Stereochemistry Molecule General Medicine Keto acid Crystal structure Enantiomer General Biochemistry Genetics and Molecular Biology
Zdroj:	Acta Crystallographica Section C Crystal Structure Communications. 55:1899-1902
ISSN:	0108-2701
DOI:	10.1107/s0108270199010380
Popis:	The title keto acid, (+)-trans-3-acetyl-2,2-dimethylcyclobutanecarboxylic acid, C 9 H 14 O 3 , derived from (-)-verbenone, aggregates in the solid as helical acid-to-ketone hydrogen-bonding chains extending in the b-cell direction [O...O = 2.711 (3) A]. Each of the carboxyl-O atoms has a close C-H contact to a separate neighboring molecule. Comparisons are drawn with the corresponding (-)-cis-epimer, as well as with the homologous (+)- and (±)-cis-pinonic acids.
Databáze:	OpenAIRE
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