Results 91 to 100 of about 327,777 (207)

Bismuth(III) triflate: an economical and environmentally friendly catalyst for the Nazarov reaction

Beilstein Journal of Organic Chemistry
We describe the use of bismuth(III) triflate as an efficient and environmentally friendly catalyst for the Nazarov reaction of aryl vinyl ketones, leading to the synthesis of 3-aryl-2-ethoxycarbonyl-1-indanones and 3-aryl-1-indanones.
Manoel T. Rodrigues Jr., Aline S. B. de Oliveira, Ralph C. Gomes, Amanda Soares Hirata, Lucas A. Zeoly, Hugo Santos, João Arantes, Catarina Sofia Mateus Reis-Silva, João Agostinho Machado-Neto, Leticia Veras Costa-Lotufo, Fernando Coelho   +10 more
doaj   +1 more source

Efficient, One-Pot Synthesis of Tetrahydrobenzo[a]xanthen-11-ones and Dibenzo[a,j]xanthenes Using Trichloroacetic Acid as a Solid Heterogeneous Catalyst Under Solvent-Free Conditions

E-Journal of Chemistry, 2011
A simple and efficient method have been described for the synthesis of 12-aryl-8,9,10,12-tetrahydrobenzo[a]xanthen-11-one derivatives employing a one-pot, three-component reaction of aryl aldehydes, 2-naphthol and dimedone in the presence of ...
Zahed Karimi Jaber, S. Zoleykha Abbasi, Baharak Pooladian, Marziyeh Jokar   +3 more
doaj   +1 more source

Amination of aryl halides with aqueous ammonia catalyzed by green recyclable poly(4-vinylpyridine)-supported copper iodide nanoparticles catalyst

Acta Chimica Slovenica, 2014
Efficient procedure for the amination of aryl halides with aqueous ammonia in the presence of poly(4-vinylpyridine)-supported copper iodide is reported.
Jalal Albadi, Jafar Abbasi Shiran, Azam Mansournezhad   +2 more
doaj  

Reactivity of acyclic (pentadienyl)iron(1+) cations: Synthetic studies directed toward the frondosins [PDF]

, 2011
A short, 4-step route to the scaffold of frondosin A and B is reported. The [1-methoxycarbonyl-5-(2′,5′-dimethoxyphenyl)pentadienyl]Fe(CO)3+ cation was prepared in two steps from (methyl 6-oxo-2,4-hexadienoate)Fe(CO)3.
Lee, Do W, Pandey, Rajesh K., Lindeman, Sergey, Donaldson, William   +3 more
core   +1 more source

Organocatalyzed synthesis of fluorinated poly(aryl thioethers)

Nature Communications, 2017
Fluorinated poly(aryl thioethers), unlike their poly(aryl ethers) counterparts, have received little attention despite excellent physical properties displayed by many polysulfides.
Nathaniel H. Park, Gabriel dos Passos Gomes, Mareva Fevre, Gavin O. Jones, Igor V. Alabugin, James L. Hedrick   +5 more
doaj   +1 more source

New Condensation polyimides containing 1,1,1-triaryl-2,2,2-trifluoroethane structures [PDF]

, 1989
The invention relates to a condensation polyimide containing a 1,1,1-triaryl 2,2,2-trifluoroethane structure and other related condensation polyimides.
Alston, William B., Gratz, Roy F.
core   +1 more source

Azine polymers and process for preparing the same Patent [PDF]

, 1970
Synthesis of azine polymers for heat shields by azine-aromatic aldehyde ...
Dalelio, G. F.
core   +1 more source

Photoredox-Catalyzed Decarboxylative Cross-Coupling Reaction to Synthesis Unsymmetrical Diarylmethanes

Molecules
The photoredox-catalyzed decarboxylative cross-coupling reaction of aryl acetic acids and aryl nitriles has been achieved under an argon atmosphere in high yields.
Guozhe Guo, Yuquan Zhang, Yanchun Li, Zhijun Li   +3 more
doaj   +1 more source

Synthesis, Electronic Properties, and X-ray Structural Characterization of Tetrarylbenzo[1,2-\u3cem\u3eb\u3c/em\u3e:4,5-\u3cem\u3eb\u3c/em\u3e′]difuran Cation Radicals [PDF]

, 2008
Electroactive tetraarylbenzo[1,2-b:4,5-b′]difuran (BDF) and model diarylbenzofuran derivatives are synthesized and their structures are established by X-ray crystallography.
Lindeman, Sergey V., Rathore, Rajendra, Shukla, Ruchi, Wadumethrige, Shriya   +3 more
core   +1 more source

Palladium-Catalyzed Esterification of Aryl Fluorosulfates with Aryl Formates

Molecules
An efficient palladium-catalyzed carbonylation of aryl fluorosulfates with aryl formates for the facile synthesis of esters was developed. The cross-coupling reactions proceeded effectively in the presence of a palladium catalyst, phosphine ligand, and ...
Xue Chen, Yuan Liang, Wen-Wen Wang, Chengping Miao, Xue-Qiang Chu, Weidong Rao, Hao Xu, Xiaocong Zhou, Zhi-Liang Shen   +8 more
doaj   +1 more source