2514-70-7Relevant articles and documents
Synthesis, crystal structure and luminescence properties of homodinuclear lanthanide complexes with a new tetrapodal thenylsalicylamide ligand
Song, Xue-Qin,Wang, Li,Zhao, Meng-Meng,Cheng, Guo-Quang,Wang, Xiao-Run,Peng, Yun-Qiao
, p. 156 - 164 (2013/07/27)
Five new homodinuclear lanthanide(III) complexes with a new tetrapodal thenylsalicylamide ligand (L), of formulae [Nd2L2(NO 3)6(CH3OH)2]·2H 2O·2CH3OH (1), and [Ln2L 2(NO3)6 (CH3OH)2] ·4CH3OH, Ln = Sm (2), Eu (3), Gd (4), Tb (5)) have been synthesized and characterized by single-crystal X-ray diffraction, elemental analysis, IR spectroscopy and molar conductance analysis. The two arms of L ligand arranged in a complementary head to head fashion to bind two lanthanide to form a cage-like coordination dimer with the other two uncoordinated arms constructing interesting three dimensional supramolecular structures. The europium and terbium containing compounds both exhibit luminescence of the referring trivalent lanthanide ions, giving a red luminescence for Eu(III) and a green luminescence for Tb(III) triggered by an efficient antenna effect of the thenylsalicylamide group.
Cyclobutane-derived diamines: Synthesis and molecular structure
Radchenko, Dmytro S.,Pavlenko, Sergiy O.,Grygorenko, Oleksandr O.,Volochnyuk, Dmitriy M.,Shishkina, Svitlana V.,Shishkin, Oleg V.,Komarov, Igor V.
scheme or table, p. 5941 - 5952 (2010/11/04)
Cyclobutane diamines (i.e., cis- and trans-1,3-diaminocyclobutane, 6-amino-3-azaspiro[3.3]heptane, and 3,6-diaminospiro[3.3]heptane) are considered as promising sterically constrained diamine building blocks for drug discovery. An approach to the syntheses of their Boc-monoprotected derivatives has been developed aimed at the preparation of multigram amounts of the compounds. These novel synthetic schemes exploit classical malonate alkylation chemistry for the construction of cyclobutane rings. The conformational preferences of the cyclobutane diamine derivatives have been evaluated by X-ray diffraction and compared with the literature data on sterically constrained diamines, which are among the constituents of commercially available drugs.
Process for producing heterocyclic aldehyde
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Page/Page column 10, (2008/06/13)
The present invention provides a process for preparing a heterocyclic aldehyde by oxidizing a heterocyclic alcohol with high selectivity and high yield. Specifically, the heterocyclic aldehyde is prepared by reacting a heterocyclic compound having at least one hydroxymethyl group bonded to a carbon atom of a heterocyclic ring with a hypohalogenous acid salt in the presence of a base to oxidize the hydroxymethyl group, wherein reaction is conducted in the co-presence of a 2,2,6,6-tetramethylpiperidine-1-oxyl derivative having at least two 2,2,6,6-tetramethylpiperidine-1-oxyl-4-yl groups.