Molecular and crystal structure of 2-benzylidene-6-furfurylidene-cyclohexanone

Golikov, A. G.; Кривенько, А. П.; Bugaev, A. A.; Солодовников, С. Ф.

doi:10.1007/s10947-006-0273-0

Cited by 5 publications

(2 citation statements)

References 2 publications

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“…In the two phenylmethylidene moieties, the corresponding -bonds are shortened [C6-C7 = 1.475 (4) and C23-C22 = 1.471 (4) Å ], which allows us to speak of incompleteconjugation of aromatic rings and double bonds. These values are slightly longer than the bond lengths characteristic for complete conjugation in similarly constructed moieties (Golikov et al, 2006); in particular, for dibenzyl-…”

Section: Structural Commentarymentioning

confidence: 79%

Crystal structure and features of 3′,8-dibenzylidene-4a,5,6,7,8,8a-hexahydro-2′H-spiro[chromene-2,1′-cyclohexan]-2′-one

2017

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The synthesis and crystal structure of the title compound, C28H28O2, are reported. The C=C—C—C torsion angles in the phenylmethylidene units are 166.6 (3) and −48.0 (4)°. In the crystal, molecules form a three-dimensional network by means of weak C—H...O hydrogen bonds. The most important contributions to the crystal structure are the H...H interactions (68.8%), while the H...O contacts account for 4.5%.

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Section: Structural Commentarymentioning

confidence: 79%

Crystal structure and features of 3′,8-dibenzylidene-4a,5,6,7,8,8a-hexahydro-2′H-spiro[chromene-2,1′-cyclohexan]-2′-one

2017

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“…One of the most useful procedures for generating pyrazolines involves the interaction of hydrazine, or its mono-substituted derivatives with α,β-unsatu-rated aldehydes or ketones, especially chalcones. Chalcones can usually be prepared by the treatment of cyclic ketones with aromatic aldehydes [7][8]. Moreover, the molecular structures, supramolecular interactions and vibrational properties of several pyrazolopiperidine derivatives have been recently determined [9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Novel 7-Aryliden-3,3a,4,5,6,7-(hexahydro-5-(2-ethoxyethyl)-2-phenyl-3-aryl-2H-pyrazolo[4,3-c]pyridine Hydrochloride: Synthesis and Structure

Koshetova¹,

Yu²,

Iskakova³

et al. 2022

Eurasian Chem. Tech. J.

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A Claisen-Schmidt type reaction of 1-(2-ethoxyethyl)piperidin-4-one with differ¬ent aromatic aldehydes led to corresponding dienones with a yield of 65‒71%. 7-Arylidene-3,3a,4,5,6,7-(hexahydro-5-(2-ethoxyethyl)-2-phenyl-3-aryl-2H-pyrazolo[4,3-c]pyridines were synthesized by heterocyclization of 3,5-dia¬rylidene-piperidin-4-ones with phenylhydrazine hydrochloride in methanol at 70 °C over 4‒6 h. The X-ray crystal structure determination of 7-(p-methoxy¬benzyliden)-3,3a,4,5,6,7-(hexahydro-5-(2-ethoxyethyl)-2-phenyl-3-(p-methoxy¬phenyl)-2H-pyrazolo[4,3-c]pyridine hydrochloride (the deposition number is CCDC 862410) was completed. The piperidine and pyrazoline rings are close to a chair and envelope conformations, respectively.

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Molecular and Crystal Structure of N-(8-benzylidene-4-phenylhexahydroquinazolin-2(1H)-ylidene)Cyanamide

Sklyar,

Grinev,

Dmitriev

et al. 2024

J Chem Crystallogr

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Molecular and crystal structure of 2-benzylidene-6-furfurylidene-cyclohexanone

Cited by 5 publications

References 2 publications

Crystal structure and features of 3′,8-dibenzylidene-4a,5,6,7,8,8a-hexahydro-2′H-spiro[chromene-2,1′-cyclohexan]-2′-one

Crystal structure and features of 3′,8-dibenzylidene-4a,5,6,7,8,8a-hexahydro-2′H-spiro[chromene-2,1′-cyclohexan]-2′-one

Novel 7-Aryliden-3,3a,4,5,6,7-(hexahydro-5-(2-ethoxyethyl)-2-phenyl-3-aryl-2H-pyrazolo[4,3-c]pyridine Hydrochloride: Synthesis and Structure

Molecular and Crystal Structure of N-(8-benzylidene-4-phenylhexahydroquinazolin-2(1H)-ylidene)Cyanamide

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