2417-85-8Relevant academic research and scientific papers
Fundamental Study on Arsenic(III) Halides (AsX3; X = Br, I) toward the Construction of C3-Symmetrical Monodentate Arsenic Ligands
Tanaka, Susumu,Konishi, Masafumi,Imoto, Hiroaki,Nakamura, Yuma,Ishida, Masatoshi,Furuta, Hiroyuki,Naka, Kensuke
supporting information, p. 9587 - 9593 (2020/07/02)
Arsenic ligands have attracted considerable attention in coordination chemistry. Arsenic(III) halides are the most important starting materials in the preparation of monodentate arsenic ligands. In this work, we optimized the synthetic methodologies of arsenic(III) halides (AsX3; X = Br, I) and examined the difference of their physical properties such as solubility to organic solvent and reactivity to nucleophiles. In addition, a wide variety of monodentate arsenic ligands were prepared with the obtained AsX3. Finally, the obtained monodentate arsenic ligands were utilized for copper-free Sonogashira cross-coupling reaction in the reaction system with porphyrin. The results showed that monodentate arsenic ligands have higher catalytic activity compared with triphenylphosphine because of the difference of the electronic features of lone pairs between arsenic and phosphorus atoms.
Experimental and Theoretical Studies of Correlated Rotation in Tris(ortho-tolyl) Derivatives of P, As and Si
Howell, James A. S.,Palin, Michael G.,Yates, Paul C.,McArdle, Patrick
, p. 1769 - 1775 (2007/10/02)
Variable temperature NMR studies have established equilibrium constants and/or activation parameters for the exo2 exo3 equilibrium in the series M(o-tolyl)3 (M=P, As), XM (o-tolyl)3 (M=P, X=O, S, Se; M=As, X=O, S) and n+ (n=O, M=Si; n=1, M=P, As).The crystal structure of OAs(o-tolyl)3H2O is reported.Molecular mechanics studies of P(o-tolyl)3 reproduce correctly the ground state exo3 conformation and provide an analysis of the lowest energy two-ring flip exchange mechanism.
TRITOLYLARSONIUM AND TRIS(METHOXYPHENYL)ARSONIUM YLIDES THE EFFECTS OF ortho-SUBSTITUENTS IN TRIARYLARSONIUM GROUPS ON THE PROPERTIES OF YLIDES
Harris, Gordon S.,Lloyd, Douglas,MacDonald, William A.,Gosney, Ian
, p. 297 - 304 (2007/10/02)
A number of tritolylarsonium and tris(methoxyphenyl)arsonium cyclopentadienylides and other ylides have been prepared and their properties (basicity, NMR spectra, reactions with aldehydes and nitrosobenzene, acetylation, and methanolysis) have been investigated.Substituents in the m- or p-positions of triarylarsonium groups have little effect on properties, but o-substituents result in markedly lower reactivity and lower basicity, and these ylides were also more difficult to prepare.NMR spectra gave indication of crowding in some of these o-substituted ylides.The effects of the o-substituents are discussed. p-Methyl- and p-methoxy-substituents increased the proportion of anil to ketoxime formed in reactions with nitrosobenzene, but the o-methoxy analogue gave only ketoxime.
