745-36-8Relevant academic research and scientific papers
METHOD FOR PRODUCING ARENE COMPOUNDS AND ARENE COMPOUNDS PRODUCED BY THE SAME
-
Paragraph 0089, (2021/06/26)
Provided is a method for producing (alkyl)arene compounds represented by Formulae 3-1, 3-2, and 3-3 by the Friedel-Crafts alkylation reaction of alkyl halide compounds and arene compounds using organic phosphine compounds as a catalyst.
Synthesis of Triarylmethanes via Palladium-Catalyzed Suzuki Coupling of Trimethylammonium Salts and Arylboronic Acids
Zhang, Zhenming,Wang, Hui,Qiu, Nianli,Kong, Yujing,Zeng, Wenjuan,Zhang, Yongquan,Zhao, Junfeng
, p. 8710 - 8715 (2018/07/21)
An efficient palladium-catalyzed Suzuki coupling of 1,1-diarylmethyl-trimethylammonium triflates with arylboronic acids is reported. This reaction offers a novel approach to triarylmethane derivatives in good to excellent yields with the palladium-catalyzed C-N bond cleavage as the key feature. Broad substrate scope regarding both reaction partners are observed. Moreover, reactive functional groups such as vinyl and formyl groups are conserved in this transformation.
Synthesis of Di- and Triarylmethanes through Palladium-Catalyzed Reductive Coupling of N -Tosylhydrazones and Aryl Bromides
Xia, Yamu,Hu, Fangdong,Xia, Ying,Liu, Zhenxing,Ye, Fei,Zhang, Yan,Wang, Jianbo
, p. 1073 - 1086 (2017/02/24)
A palladium-catalyzed reductive coupling between N-tosylhydrazones and aryl bromides has been developed. The reaction provides an efficient method for the synthesis of diarylmethanes and triarylmethanes via the formation of C(sp2)-C(sp3) single bonds. This new methodology for the synthesis of diarylmethanes and triarylmethanes is featured by the ready availability of the starting materials, mild reaction conditions, and the tolerance of wide range of functional groups. The reaction follows a pathway including palladium carbene formation, migratory insertion, and reduction of the alkylpalladium(II) intermediate.
Palladium-catalyzed diarylmethyl C(sp3)-C(sp2) bond formation: A new coupling approach toward triarylmethanes
Xia, Ying,Hu, Fangdong,Liu, Zhenxing,Qu, Peiyuan,Ge, Rui,Ma, Chen,Zhang, Yan,Wang, Jianbo
, p. 1784 - 1787 (2013/06/26)
Palladium-catalyzed reductive coupling reactions between N-tosylhydrazones and aryl halides lead to the formation of C(sp3)-C(sp2) bonds. This approach provides a general route for the synthesis of triarylmethanes.
Microwave-assisted nafion-H catalyzed friedel-crafts type reaction of aromatic aldehydes with arenes: Synthesis of triarylmethanes
Prakash, Surya G. K.,Fogassy, Gabriella,Olah, George A.
experimental part, p. 155 - 159 (2011/01/04)
A new solid acid Nafion-H, a perfluorinated sulfonic acid resin, catalyzed microwave-assisted synthesis of triarylmethanes is described. Various benzaldehydes react readily with arenes to provide the corresponding triarylmethanes in good to excellent yields. The reactions were carried out under solvent free conditions under microwave irradiation in a pressure vessel. The solvent free microwave irradiation methods appears to be an environmentally friendly synthetic protocol providing products in significantly shorter reaction times over traditional heating methods carried out in a pressure tube.
Equilibrium acidities of some sulfones and sulfoxides in tetrahydrofuran
Streitwieser, Andrew,Wang, George Peng,Bors, Daniel A.
, p. 10103 - 10112 (2007/10/03)
Ion pair acidities are reported in tetrahydrofuran (THF) solution for the lithium and cesium salts of several sulfones and one sulfoxide. These salts are shown to be monomeric in the THF solutions studied. Thermodynamic constants are reported for several salts. The results and some conductivity studies show that both the lithium and cesium salts are contact ion pairs in THF. Because of ion association the relative pKs are slightly lower for cesium salts and much lower for lithium salts than for the free ions in DMSO solution.
Acidity of dibasic carbon acids. Part 5.1-4 the second acidity constant of 9,10-dihydrodibenz[a,h]anthracene in tetrahydrofuran - Geometry, charge distribution of dianion, structure of dimetallic salts
Nir, Malka,Shapiro, Israel O.,Rabinovitz, Mordecai
, p. 329 - 332 (2007/10/03)
The second equilibrium ion pair acidity constant (pK2) of 9,10-dihydrodibenz[a,h]anthracene (DBDHA, 1H2) with counter ions sodium (pK2 28.5) and potassium (pK2 30.4) has been determined in tetrahydrofuran (THF)
Superacid-catalyzed reaction of substituted benzaldehydes with benzene
Saito, Shinichi,Ohwada, Tomohiko,Shudo, Koichi
, p. 8089 - 8093 (2007/10/03)
Benzaldehydes bearing an electron-withdrawing group reacted with 2 equiv of benzene in the presence of a superacid, trifluoromethanesulfonic acid, to give substituted triphenylmethane in good yields. On the other hand, benzaldehydes bearing an electron-donating or a neutral group reacted under the similar conditions to give unsubstituted diphenylmethane and triphenylmethanol, together with substituted benzene. We propose a new mechanism of this reaction, which involves transalkylation as the key step.
CRYPTATE ACIDITY SCALES. VI. EFFECT OF POLARITY OF THE MEDIUM ON CRYPTATE ION-PAIR ACIDITY
Antipin, I. S.,Vedernikov, A. N.,Solomonov, B. N.,Konovalov, A. I.
, p. 1861 - 1865 (2007/10/02)
A thermodynamic analysis was made of the effects of various types of solvation interactions on ion-pair acidity.It was shown that the polarity of the medium does not have an effect on the relative cryptate acidity of organic compounds.
