134356-73-3Relevant articles and documents
Synthesis, Crystal Structures, and Catalytic Oxidation of Olefins of Novel Oxomolybdenum(VI) Clusters
Peng
, p. 457 - 466 (2019)
Abstract: Two Mo(VI) clusters, (H2L)3[Mo7O12(μ2-O)8(μ3-O)4] · 3H2O (I) and (H2L)2[Mo8O14(μ2-O)6
Iron-Decorated, Guanidine Functionalized Metal-Organic Framework as a Non-heme Iron-Based Enzyme Mimic System for Catalytic Oxidation of Organic Substrates
Shaabani, Ahmad,Mohammadian, Reza,Farhid, Hassan,Karimi Alavijeh, Masoumeh,Amini, Mostafa M.
, p. 1237 - 1249 (2019)
A novel porous functionalized metal-organic framework (MOF) as a non-heme iron-based enzyme mimic system was achieved via two-step post-synthetic modification of the MIL-101(Cr)-NH2, and characterized by FT-IR, PXRD, TGA, SEM, EDS, CHN, BET surface area, and ICP-OES analyses. This new modified MOF (MIL-101(Cr)-guanidine-Fe) has been demonstrated to be a highly efficient, active, and reusable catalyst for oxidation of various organic substrates, including alcohols, alkenes and alkyl arenes at room temperature using H2O2 as an oxidant. Graphical Abstract: [Figure not available: see fulltext.].
Enhanced turnover rate and enantioselectivity in the asymmetric epoxidation of styrene by new T213G mutants of CYP 119
Zhang, Chun,Li, Jing,Yang, Bo,He, Fang,Yang, Sheng-Yong,Yu, Xiao-Qi,Wang, Qin
, p. 27526 - 27531 (2014)
New CYP 119 T213G mutants were constructed and characterized. Introduction of the T213G mutation into the wild-type CYP 119 significantly enhances the turnover rate for the peroxide-dependent styrene epoxidation 4.4-fold to 346.2 min-1, and the
Facile access to α-acyloxyamides via epoxide rearrangement/three-component domino reaction catalyzed by indium(III) chloride
Lingaswamy, Kadari,Krishna, Palakodety Radha,Prapurna, Y. Lakshmi
, p. 1275 - 1282 (2016)
A simple and efficient Passerini reaction of epoxides involving highly regioselective rearrangement of epoxide to aldehyde/three-component Passerini reaction catalyzed by indium(III) chloride is described. In the present protocol, epoxides served as wonderful substrates to furnish a library of α-acyloxyamides under mild reaction conditions in shorter reaction times and in good yields.
Chiral Separation of Styrene Oxides Supported by Enantiomeric Tetrahedral Neutral Pd(II) Cages
Rajasekar, Prabhakaran,Pandey, Swechchha,Ferrara, Joseph D.,Del Campo, Mark,Le Magueres, Pierre,Boomishankar, Ramamoorthy
, (2019)
The separation of enantiomers is of considerable importance in the preparation of the compounds of biological interests, catalysis, and drug development. Here, we report a novel enantioseparation of styrene epoxides (SOs) resolved in the presence of a pair of enantio-enriched tetrahedral cages. Chiral neutral cages of formula [(Pd3X*)4(C6O4Cl2)6] ([X*]3- = RRR- or SSS-[PO(N(*CH(CH3)Ph)3]3-) are constructed from Pd3 building units supported by tris(imido)phosphate trianions and chloranilate linkers. These cages exhibit considerable enantioselective separation capabilities toward a series of styrene epoxides via a crystallization inclusion method. A highest enantiomeric excess (ee) value of up to 80% is achieved for the (R)-4-fluorostyrene oxide.
Two dioxomolybdenum(VI) complexes with hydrazone ligands: synthesis, characterization, crystal structures and catalytic properties
Peng, Dong-Lai
, p. 843 - 848 (2016)
A pair of Mo(VI) complexes, [MoO2L1(MeOH)] (1) and [MoO2L2(MeOH)] (2), where L1 and L2 are the dianions of 2-amino-N’-(3-bromo-5-chloro-2-hydroxybenzylidene)benzohydrazide (H2Ls
Binaphthyl Schiff base complexes of palladium(n). Structures and reactivities toward alkene epoxidation
Zhou, Xiang-Ge,Huang, Jie-Sheng,Yu, Xiao-Qi,Zhou, Zhong-Yuan,Che, Chi-Ming
, p. 1075 - 1080 (2000)
Palladium(n) binaphthyl Schiff base complexes [PdII(L)](1: H2L =(racemic or fl)-2,2′-bis(3,5-dichloro-2-hydroxybenzylideneamino)-l, 1′-binaphthyl(H2L2);2: H2L =(A)-2,2′-bis(3,5-dichloro-2-hydroxylbenzylideneamino)-5,5′,6, 6′,7,7′,8,8′-octahydro-l,1′-binaphthyl(H 2L3)) were prepared from sequential reactions of H2L with sodium methoxide and palladium(n) acetate in methanol in about 70% yields. Both complexes 1 and 2 have been characterised by X-ray crystallography as well as 1H NMR, IR, UV/VIS and MS spectroscopy. The structures of 1 and 2 feature a pseudo planar N2O2 arrangement with the Schiff base ligands adopting a stepped conformation, in contrast to the non-planar N2O2 geometry usually observed for this type of Schiff base bound to various metal ions. The catalytic behaviour of complexes 1 and 2 toward asymmetric epoxidation of styrenes was investigated. With 2 as a catalyst, a 71% ee was obtained for the epoxidation of p-fiuorostyrene by 1BuOOH. The Royal Society of Chemistry 2000.
Synthesis of new chiral Mn(iii)-salen complexes as recoverable and reusable homogeneous catalysts for the asymmetric epoxidation of styrenes and chromenes
Chaudhary, Pooja,Damodaran, Krishna K.,Singh, Surendra,Yadav, Geeta Devi
, p. 1308 - 1318 (2022/02/07)
New chiral Mn(iii)-salen complexes 1a-e and 2a-e were synthesized from the reaction of C2-symmetric chiral salen ligands and Mn(CH3COO)2·4H2O under an inert atmosphere followed by aerobic oxidation. These complexes were obtained in 91-96% yields and characterized by HRMS, FT-IR, UV-visible spectroscopy, TGA, and elemental analysis. The chiral Mn(iii)-salen complexes 1a-e and 2a-e were evaluated in the asymmetric epoxidation of styrene using NaOCl as an oxidant in ethyl acetate as a green solvent. The chiral Mn(iii)-salen complexes 1b and 2b (2 mol%) catalyzed the asymmetric epoxidation of substituted styrenes and chromenes to afford the corresponding epoxides in 95-98% yields with 29-88% ee's. The catalysts 1b and 2b were recovered and reused for up to 2 and 3 runs, respectively, in the asymmetric epoxidation of styrene, and the yield of styrene oxide gradually decreased but the ee was consistent.
Diastereoselective Alkene Hydroesterification Enabling the Synthesis of Chiral Fused Bicyclic Lactones
Shi, Zhanglin,Shen, Chaoren,Dong, Kaiwu
supporting information, p. 18039 - 18042 (2021/11/16)
Palladium-catalysed diastereoselective hydroesterification of alkenes assisted by the coordinative hydroxyl group in the substrate afforded a variety of chiral γ-butyrolactones bearing two stereocenters. Employing the carbonylation-lactonization products as the key intermediates, the route from the alkenes with single chiral center to chiral THF-fused bicyclic γ-lactones containing three stereocenters was developed.
