Oxidoperoxidotungsten(VI) Complexes with Secondary Hydroxamic Acids: Synthesis, Structure and Catalytic Uses in Highly Efficient, Selective and Ecologically Benign Oxidation of Olefins, Alcohols, Sulfides and Amines with H
<sub>2</sub>
O
<sub>2</sub>
as a Terminal Oxidant
作者:Swarup K. Maiti、Subhajit Dinda、Surajit Banerjee、Alok K. Mukherjee、Ramgopal Bhattacharyya
DOI:10.1002/ejic.200701043
日期:2008.4
respectively. Aqueous tungstate solution, on reaction with all these hydroxamicacids, produced [W(O)2(hydroxamato)2] (6). The complexes show excellent catalytic functions in the oxidation of (a) olefins at room temperature in the presence of NaHCO3 as promoter, (b) alcohols, sulfides and amines, at reflux, with H2O2 as a terminaloxidant, yielding a high turnover number (TON), the highest being for olefin-to-epoxide
One-Step Formation both of C-N and of C-O Bonds of N-Alkoxyamides through NHC-Catalyzed Three-Component Reactions of Enals, Nitrosoarenes, and Enones
作者:Zhong-Xin Sun、Ying Cheng
DOI:10.1002/ejoc.201200525
日期:2012.9
NHC-catalyzedthree-componentreactions of α,β-unsaturated aldehydes (enals), nitrosoarenes, and α,β-unsaturated ketones (enones) were studied. The reactions proceeded through a cascade aza-benzoin condensation/oxo-Michael addition sequence to produce N,O-bisfunctionalized N-hydroxylacrylamides in moderate to good yields. This work not only provides an efficient method for the one-stepformation both
Organic-inorganic hybrid material, composition for synthesizing the same, and manufacturing method of the same
申请人:Semiconductor Energy Laboratory Co., Ltd.
公开号:US20040265253A1
公开(公告)日:2004-12-30
An organic-inorganic hybrid material chelating a metal atom of a metal oxide matrix
103
in a pendant shape is synthesized, where the organic compound (the functional chelating agent)
104
is able to develop a function of a coloring property, a light-emitting property, or semiconductivity by chelating a metal atom. As a synthesis method, sol (a composition for coating application) including a metal alkoxide and/or a metal salt and a functional chelating agent may be prepared and the organic-inorganic hybrid material may be synthesized by sol-gel method.
Due to the above-mentioned structure, it is possible to synthesize an organic-inorganic hybrid material that has an organic group directly bonded to a metal oxide matrix and is able to develop a different function from that of a mere metal oxide. In other words, it is possible to realize a functional organic-inorganic hybrid material that develops a coloring property, a light-emitting property, or semiconductivity due to the organic group directly bonded to the metal oxide matrix.
Oxo- and Oxoperoxo-molybdenum(VI) Complexes with Aryl Hydroxamates: Synthesis, Structure, and Catalytic Uses in Highly Efficient, Selective, and Ecologically Benign Peroxidic Epoxidation of Olefins
作者:Swarup K. Maiti、K. M. Abdul Malik、Shalabh Gupta、Santu Chakraborty、Ashok K. Ganguli、Alok K. Mukherjee、Ramgopal Bhattacharyya
DOI:10.1021/ic0607235
日期:2006.11.1
MoO(O2)(CPHA)2 (5') was converted during recrystallization. An aqueous molybdate solution readily reacts with all those hydroxamic acids producing [Mo(O)2(hydroxamate)2] (6). While 2, 3, and 4 possess a very distorted pentagonal bipyramidal structure, 5 has a distorted octahedral geometry. In the solidstate, as well as in solution, 5 exists as two apparently enantiomerically related molecules differing in
Biphenyl and Naphthyl-Phenyl Hydroxamic Acid Derivatives
申请人:Pisano Claudio
公开号:US20080319082A1
公开(公告)日:2008-12-25
Biphenyl and phenyl-naphthyl compounds bearing a hydroxamic group, which are endowed with antitumour, and anti-angiogenic activity These compounds are therefore particularly useful for the treatment of drug-resistant tumours.