An organocatalytic C–C bond cleavage approach: a metal-free and peroxide-free facile method for the synthesis of amide derivatives
作者:Nagaraju Vodnala、Raghuram Gujjarappa、Saibabu Polina、Vanaparthi Satheesh、Dhananjaya Kaldhi、Arup K. Kabi、Chandi C. Malakar
DOI:10.1039/d0nj04158k
日期:——
A facile organocatalytic approach has been devised towards the synthesis of amide derivatives using 1,3-dicarbonyls as easily available acyl-sources under peroxide-free reaction conditions. This transformation was accomplished by the cleavage of the C–C bond in the presence of TEMPO as an organocatalyst and excludes the use of transition-metals and harsh reaction conditions. A broad range of substrates
[EN] OXO-NITROGENATED COMPLEX OF COBALT, CATALYTIC SYSTEM COMPRISING SAID OXO-NITROGENATED COMPLEX AND PROCESS FOR THE (CO) POLYMERIZATION OF CONJUGATED DIENES<br/>[FR] COMPLEXE DE COBALT OXO-AZOTÉ, SYSTÈME CATALYTIQUE LE COMPRENANT ET PROCÉDÉ DE (CO)POLYMÉRISATION DE DIÈNES CONJUGUÉS
申请人:VERSALIS SPA
公开号:WO2014097167A1
公开(公告)日:2014-06-26
The present invention relates to an oxo-nitrogenated complex of cobalt having the general formula (I) wherein the residues R1, R2, R3, X1 and X2 are as defined in the claims. Said oxo-nitrogenated complex of cobalt having general formula (I) can be advantageously used in a catalytic system for the (co) polymerization of conjugated dienes.
作者:Shibdas Banerjee、Fang Liu、David M. Sanchez、Todd J. Martínez、Richard N. Zare
DOI:10.1021/jacs.7b06813
日期:2017.10.18
We have investigated the gas-phase production of isoquinoline by performing collisional activation on benzalaminoacetal, the first intermediate in the classic solution-phase Pomeranz-Fritsch synthesis of isoquinoline. We have elucidated the reaction pathways in the gas phase using tandem mass spectrometry. Unlike the corresponding condensed-phase reaction, where catalytic proton exchange between intermediate(s)
Chelate rings in a quadruply bonded dimetal compound: Preparation and structure of diacetatodi(4-phenylimino-2-pentanonato)dimolybdenum
作者:F.Albert Cotton、William H. Ilsley、Wolfgang Kaim
DOI:10.1016/s0020-1693(00)95556-7
日期:1979.1
crystallineMo 2 (O 2 CCH 3 ) 2 [PhNC(CH 3 )CHC(CH 3 )O] 2 . The crystal and molecular structures have been determined by X-raycrystallography. The crystals belong to space group P 1 with a = 11.723(3) A , b = 10.402(2) A , c = 12.624(2) A ; α = 112.88(1)°, β = 95.04(1)°, γ = 107.01(1)°, and Z = 2. The structure has a cisoid arrangement of the bridging acetate ligands and one chelate ring on each metal
Kinetic Study of the Oxidative Addition Reaction between Methyl Iodide and [Rh(imino-β-diketonato)(CO)(PPh)3] Complexes, Utilizing UV–Vis, IR Spectrophotometry, NMR Spectroscopy and DFT Calculations
Experimentally the [Rh(CH3COCHCNPhCH3)(CO)(PPh3)] + CH3I reaction proceeds through one reaction step, with a rhodium(III)-alkyl as the final reaction product. However, the [Rh(CH3COCHCNHCH3)(CO)(PPh3)] + CH3I reaction proceeds through two reaction steps, with a rhodium(III)-acyl as the final reaction product. DFT calculations of all the possible reaction products and transition states agree with experimental