Journal ArticleDOI
9-(4-Bromophenyl)-3,3,6,6-tetramethyl-3,4,6,7-tetrahydro-2H-xanthene-1,8(5H,9H)-dione
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TLDR
The title compound, C23H25BrO3, was synthesized by the reaction of p-bromo-benzaldehyde with dimedone and HClO4/SiO2 in EtOH as mentioned in this paper.Abstract:
The title compound, C23H25BrO3, was synthesized by the reaction of p-bromobenzaldehyde with dimedone and HClO4/SiO2 in EtOH. In the molecule, the dihydropyran ring adopts a boat conformation and the two cyclohexene rings are in a trans conformation.read more
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Synthesis and special characterization through X-ray analysis of 1,8-dioxooctahydroxanthenes
Milene Lopes da Silva,Róbson Ricardo Teixeira,Lucas de Azevedo Santos,Felipe T. Martins,Teodorico C. Ramalho +4 more
TL;DR: In this paper, a series of 1,8-dioxooctahydroxanthenes were synthesized via Knoevenagel condensation between different aldehydes and β-diketones.
Journal ArticleDOI
Qualitative and quantitative analysis of intermolecular interactions in xanthenedione derivatives.
TL;DR: The results show that all the derivatives of xanthenedione molecules adopt the same structural conformation, where the central ring has a shallow boat conformation and the outer rings have a twisted boat conformed.
Journal ArticleDOI
9-(2,4-Dichloro-phen-yl)-3,3,6,6-tetra-methyl-3,4,5,6-tetra-hydro-9H-xanthene-1,8(2H,7H)-dione.
TL;DR: C23H24Cl2O3 was synthesized by reaction of 2,4-dichloro-benzaldehyde and 5,5-dimethylcyclohexane-1,3-dione in ethyl-ene glycol as mentioned in this paper.
Journal ArticleDOI
cis-3-Methyl-1-phenyl-8a,9,10,11,12,12a,12b-hexa-hydro-1H,3bH-pyrazolo[3,4:2',3']pyrano[4',5',6'-kl]xanthene.
TL;DR: The asymmetric unit of the title compound, C23H22N2O2, contains two independent molecules, A and B, which one of the dihydropyran rings adopts a boat conformation while the other is in a half-chair conformation.
References
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Synthesis of polycyclic xanthenes and furans via palladium-catalyzed cyclization of polycyclic aryltriflate esters
Ji-Quan Wang,Ronald G. Harvey +1 more
TL;DR: In this article, the first examples of Pd-catalyzed cross-coupling of aryl triflate esters with arenes to form diaryl ethers were presented.
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Regiospecific reactions of phenol salts: reaction-pathways of alkylphenoxy-magnesiumhalides with triethylorthoformate
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Condensation of aromatic aldehydes with 5,5-dimethyl- 1,3-cyclohexanedione without catalyst
TL;DR: In this paper, the condensation of aromatic aldehyde with 5,5-dimethyl-1,3-cyclohexanedione is carried out in ethylene glycol as solvent without catalyst.