caa a22 4500 467920583 CHVBK 20180406152916.0 cr unu---uuuuu 170328e20061101xx s 000 0 eng 10.1007/s00706-006-0538-5 doi (NATIONALLICENCE)springer-10.1007/s00706-006-0538-5 α-Ketoacid Intermolecular Hydrogen Bonding. Supramolecular Ribbons and Stacking in α-Pyrroleglyoxylic Acids [Elektronische Daten] [Nicholas T. Salzameda, David A. Lightner] Summary.: Rarely-seen carboxylic acid to ketone intermolecular hydrogen bonding is found in crystal structures of α-pyrroleglyoxylic acids. 3,4-Diethyl-1H-pyrrole-2-glyoxylic acid, prepared by saponfication of the reaction product between 3,4-diethylpyrrole and ethyl oxalyl chloride formed crystals that showed the uncommon carboxyl to ketone intermolecular hydrogen bonding, with the hydrogen-bonded α-pyrroleglyoxylic acids stacked neatly in layers. This α-ketoacid hydrogen-bonding pattern was repeated in (Z)-2,3,7,8-tetraethyl-10H-dipyrrin-1-one-9-glyoxylic acid, which also engaged in dipyrrinone-to-dipyrrinone intermolecular hydrogen bonding to form supramolecular ribbons in the crystal. Springer-Verlag, 2006 Keywords. Pyrrole nationallicence Dipyrrinone nationallicence Synthesis nationallicence X-ray crystallography nationallicence Salzameda Nicholas T. Department of Chemistry, University of Nevada, Reno, Nevada, USA aut Lightner David A. Department of Chemistry, University of Nevada, Reno, Nevada, USA aut Monatshefte für Chemie / Chemical Monthly Springer-Verlag 137/11(2006-11-01), 1453-1462 0026-9247 137:11<1453 2006 137 706 https://doi.org/10.1007/s00706-006-0538-5 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00706-006-0538-5 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Salzameda Nicholas T. Department of Chemistry, University of Nevada, Reno, Nevada, USA aut NATIONALLICENCE 700 1- Lightner David A. Department of Chemistry, University of Nevada, Reno, Nevada, USA aut NATIONALLICENCE 773 0- Monatshefte für Chemie / Chemical Monthly Springer-Verlag 137/11(2006-11-01), 1453-1462 0026-9247 137:11<1453 2006 137 706 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer