345930-52-1Relevant academic research and scientific papers
Variation of Desolvation Behavior in Two Isostructural Metal–Organic Frameworks Based on a Flexible, Racemic Bifunctional Organic Linker
Bezrukov, Andrey A.,T?rnroos, Karl W.,Dietzel, Pascal D. C.
, p. 4430 - 4439 (2016)
A racemic mixture of the chiral ligand 4,4′-(1,2-dihydroxyethane-1,2-diyl)dibenzoic acid was used to prepare two isostructural metal–organic frameworks, CPO-49-Zn and CPO-49-Mn, which contain coordinated solvent molecules at the metal site. The compounds showed different behavior upon desolvation. The dissociation of the solvent molecule from the metal site leads to a single-crystal-to-single-crystal transformation. In CPO-49-Zn, a change of coordination geometry from trigonal bipyramidal to tetrahedral occurs at the zinc atom. In CPO-49-Mn, a rearrangement of coordination mode of a carboxylate group occurs instead, leading to a 4+1 coordination of the manganese cation in the form of a capped distorted tetrahedron. N2gas adsorption confirms that both desolvated structures are permanently porous. The behavior of the compounds upon heating has also been studied using variable temperature powder X-ray diffraction. The presence of a coordinated solvent molecule in the as-synthesized structures indicates the possibility to access the metal cation with reactive substrates. Both materials were evaluated in the catalytic oxidation of styrene. CPO-49-Mn showed significantly higher conversion than the CPO-49-Zn material.
EFFICIENT FORMATION OF PINACOLS FROM ALDEHYDES OR KETONES MEDIATED BY SAMARIUM DIIODIDE
Namy, J. L.,Souppe, J.,Kagan, H. B.
, p. 765 - 766 (2007/10/02)
Samarium diiodide is an excellent reagent for aldehyde or ketone coupling.With aromatic aldehydes, reactions are very fast with a complete selectivity versus substituents such as cyano, carbonyl or nitro groups.
SOME ORGANIC REACTIONS PROMOTED BY SAMARIUM DIIODIDE
Souppe, J.,Danon, L.,Namy, J.L.,Kagan, H.B.
, p. 227 - 236 (2007/10/02)
Various homoallylic alcohols and homobenzylic alcohols were prepared by the reaction between aldehydes and allylic or benzylic halides in the presence of samarium diiodide.This iodide is also a very good reagent for formation of pinacols from aldehydes or ketones.The reactions are especially fast and selective in the case of substituted benzaldehydes.The reactivities of various nitrogen functional groups (imine, oxime, nitro, azo, cyano) towards SmI2 were also examined.
