23652-85-9Relevant articles and documents
A novel oxidative free radical reaction between 2-hydroxy-1,4-naphthoquinone and β-enamino carbonyl compounds
Chuang, Che-Ping,Wu, Yi-Lung
, p. 1717 - 1719 (2001)
The manganese(III) initiated oxidative free radical reaction between 2-hydroxy-1,4-naphthoquinone and β-enamino carbonyl compound 2 is described. Enamine radical 5 can be generated effectively from the oxidation of enamine 2 by manganese(III) acetate. Spi
Vibrational assignment, structure and intramolecular hydrogen bond of 4-methylamino-3-penten-2-one
Raissi, Heidar,Moshfeghi, Effat,Farzad, Farzaneh
, p. 1004 - 1015 (2005)
The molecular structure, intramolecular hydrogen and vibrational frequencies of 4-methylamino-3-penten-2-one were investigated by a series of density functional theoretical (DFT) calculations and ab initio calculation at the post-Hartree-Fock (MP2) level. Fourier transform infrared and Fourier transform Raman spectra of this compound and its deuterated analogue were clearly assigned. The calculated geometrical parameters show a strong intramolecular hydrogen bond with a N...O distance of 2.622-2.670 A. This bond length is about 0.02 A shorter than that in its parent, 4-amino-3- penten-2-one which is in agreement with spectroscopic results. Furthermore, the conformations of methyl groups with respect to the plane of the molecule and with respect to each other were investigated.
CATALYST COMPOSITION FOR POLYMERIZATION OF OLEFINS
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, (2015/12/27)
A catalyst composition comprising a monoester, the compound represented by formula (I) as an internal electron donor, and optionally an additional internal electron donor selected from a group consisting of diesters and diethers, wherein: R1, R2, R3, R4, R5 and R6 are hydrogen, straight, branched and cyclic alkyl having at most 20 carbon atoms and aromatic substituted and unsubstituted hydrocarbyl having 6 to 20 carbon atoms, R7 is a straight, branched and cyclic alkyl having at most 20 carbon atoms and aromatic substituted and unsubstituted hydrocarbyl having 6 to 20 carbon atoms, and R8 is an aromatic substituted and unsubstituted hydrocarbyl having 6 to 20 carbon atoms. Also described is a process for preparing the polymerization catalyst composition, a polymerization catalyst system comprising the catalyst composition, a co-catalyst and optionally an external electron donor; and use of the catalyst system for polymerization of olefins.
Functionalized fulgides and fluorophore-photoswitch conjugates
Struebe, Frank,Rath, Susann,Mattay, Jochen
experimental part, p. 4645 - 4653 (2011/10/03)
Various fulgides based on benzofuryl and indolyl core units with versatile functionalities were synthesized. Substitution at the phenylic site shows only small effects on the photochromic properties compared to the parent compounds 30 and 31. Fulgide-dye
