7673-68-9Relevant articles and documents
X-ray and computational investigations of ethanoanthracenes: 9,10-dihydro-9,10-ethanoanthracene-12-carboxylic acid and 9,10-dihydro-9,10-ethanoanthracen-9-yl)-N-methylethanamine
Al-Qubati, Mohyeddine,Alzahrani, Eman,Ghabbour, Hazem A.,Soliman, Saied M.,Sultan, Mujeeb A.
, (2022/01/11)
Two ethanoanthracenes 3 and 5 have been synthesized, crystalized and computationally investigated. The ethanoanthracene 3 and 5 were crystallized in a monoclinic system; P21/c, a = 6.1899 (2) ?, b = 35.4668 (11) ?, c = 11.7945 (3) ?, β = 103.071 (1)°, V 2522.23 (13) ?3, Z = 8 and ethanoanthracene 5 was crystallized in a monoclinic system; P21/c, a = 11.0125 (3) ?, b = 32.1735 (7) ?, c = 11.1222 (3) ?, β = 114.026 (1)°, V = 3599.29 (16) ?3, Z = 4. The Hirshfeld analysis was employed to identify the intermolecular interactions of ethanoanthracenes 3 and 5 crystals. The molecular packing of ethanoanthracene 3 depends on H…H (57.1-59.1%), H…C (19.2-22.7%) and O…H (15.6–15.8%) contacts in addition to minor contributions from the C…O (1.1–2.5%) and C…C (2.1–4.7%) contacts, while the H…H (59.6–57.1%), H…C (21.2–22.7%) and Cl…H (15.6–17.1%) are the most important contacts in ethanoanthracene 5 molecular packing. The calculated dipole moments values for ethanoanthracene 3 (1.1452 Debye) are lower than ethanoanthracene 5 (8.8291 Debye). In addition, the atomic charge distribution, molecular electrostatic potential map and reactivity descriptors of the ethanoanthracenes 3 and 5 were reported.
EPC-synthesis via asymmetric Diels-Alder reactions/retro Diels-Alder reactions I: (R)- and (S)-matsutake alcohol, (R)- and (S)-sarcomycin methyl ester
Helmchen,Ihrig,Schindler
, p. 183 - 186 (2007/10/02)
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Catalytic Oxidation of Reduced Nicotinamide Adenine Dinucleotide by Graphite Electrodes Modified with Adsorbed Aromatics Containing Catechol Functionalities
Jaegfeldt, Hans,Torstensson, Arne B. C.,Gorton, Lo G. O.,Johansson, Gillis
, p. 1979 - 1982 (2007/10/02)
4-catechol (NSCH2) and 4-catechol (ASCH2) were adsorbed on graphite electrodes.The naphthalene and the ethaneanthracene ring systems were used as anchors to the graphite.The catechol group is free to move out into the electrolyte solution.The electron transfer between the 1,2-hydroquinone functionality and the graphite was fast.The surface coverage was at most 9 x 10-9 mol cm -2.The coenzyme reduced nicotinamide adenine dinucleotide (NADH) could be catalytically oxidized by the immobilized mediating groups.The overvoltage of the NADH oxiadation decreased from 410 mv vs.SCE at the unmodified graphite electrode to 185 mV at the NSCH2 covered electrode at pH 7.=.The reaction rate of the ASCH2 covered electrode was lower than that of the NSCH2 electrode.After 30 min of continuous electrochemical cycling of pH 7.0, 30percent of the original coverage remained for the NSCH2 electrode.
