- Synthesis, crystal structures and magnetic properties of M IICuII chains (M=Mn and Co) with sterically hindered alkyl-substituted phenyloxamate bridging ligands
-
A series of neutral oxamato-bridged heterobimetallic chains of general formula [MCu(Lx)2(S)2]·p S·q H2O [p=0-1, q=0-2.5; L1=N-2,6-dimethylphenyloxamate, S=DMF with M=Mn (1 a) and Co (1 b); L2/su
- Ferrando-Soria, Jesaus,Pardo, Emilio,Ruiz-Garcia, Rafael,Cano, Joan,Lloret, Francisco,Julve, Miguel,Journaux, Yves,Pasan, Jorge,Ruiz-Perez, Catalina
-
-
Read Online
- Ligand design for heterobimetallic single-chain magnets: Synthesis, crystal structures, and magnetic properties of MIICuII (M = Mn, Co) chains with sterically hindered methyl-substituted phenyloxamate bridging ligands
-
Two new series of neutral oxamato-bridged heterobimetallic chains of general formula [MCu(Lx)2]· mDMSO (m = 0-4) (L 1 = N-2-methyl-phenyloxamate, M = Mn (1a) and Co (1b) ; L2 = N-2,6-dimethylphenyloxamate, M = M
- Pardo, Emilio,Ruiz-Garcia, Rafael,Lloret, Francesc,Faus, Juan,Julve, Miguel,Journaux, Yves,Novak, Miguel A.,Delgado, Fernando S.,Ruiz-Perez, Catalina
-
-
Read Online
- Bis(oxamato)palladate(II) complexes: synthesis, crystal structure and application to catalytic Suzuki reaction
-
New bis(oxamato)palladate(II) complexes, [Pd(H2O)4][Pd(2,6-Me2pma)2]·2H2O (1), (n-Bu4N)2[Pd(2,6-Me2pma)2]·2H2O (2a), and (n-Bu4N)2[Pd(2,6-Me2pma)2]·2CHCl3 (2b) (2,6-Me2pma = N-2,6-dimethylphenyoxamate and n-Bu4N+ = tetra-n-butylammonium), have been synthesized and the structures of 1 and 2b characterized by single-crystal X-ray diffraction. Complex 1 is a double salt constituted by tetraaquapalladium(II) cations and bis(oxamato)palladate(II) anions interlinked by hydrogen bonds. The palladium(II) ions in 1 are four-coordinate with two oxygens and two nitrogens from two fully deprotonated oxamate ligands (anion), and four water molecules (cation) building centrosymmetric square-planar surroundings. Centrosymmetric bis(oxamato)palladate(II) anions occur in 2b as in 1, the charge balance in this compound being ensured by the bulky n-Bu4N+. The catalytic role of 1 and 2a for the Suzuki reaction has been investigated by using a series of aryl iodide/bromide derivatives in the conventional organic medium dimethylformamide. The tetraaquapalladium(II) unit in 1 appears to be active in the catalytic Suzuki cross-coupling reactions, but it readily decomposes to inactive palladium black.
- Fortea-Pérez, Francisco Ramón,Armentano, Donatella,Julve, Miguel,De Munno, Giovanni,Stiriba, Salah-Eddine
-
-
Read Online
- Lanthanide complexes with N-(2,6-dimethylphenyl)oxamate: Synthesis, characterisation and cytotoxicity
-
The complexation reactions of Ce(III), Nd(III), Gd(III) and Er(III) ions with the chelating/ bridging monoanionic ligand N-(2,6-dimethylphenyl)oxamate (Hpma?) in basic media were performed in view of the potential applications of oxamate deriva
- Abrahams, Abubak'r,Davids, Hajierah,Hosten, Eric C.,Madanhire, Tatenda,Pereira, Melanie C.
-
-
Read Online
- Copper-Catalyzed SN2′-Selective Allylic Substitution Reaction of gem-Diborylalkanes
-
A Cu/(NHC)-catalyzed SN2′-selective substitution reaction of allylic electrophiles with gem-diborylalkanes is reported. Different substituted gem-diborylalkanes and allylic electrophiles can be employed in this reaction, and various synthetic v
- Zhang, Zhen-Qi,Zhang, Ben,Lu, Xi,Liu, Jing-Hui,Lu, Xiao-Yu,Xiao, Bin,Fu, Yao
-
supporting information
p. 952 - 955
(2016/03/15)
-
- Copper-Catalyzed SN2′-Selective Allylic Substitution Reaction of gem-Diborylalkanes
-
A Cu/(NHC)-catalyzed SN2′-selective substitution reaction of allylic electrophiles with gem-diborylalkanes is reported. Different substituted gem-diborylalkanes and allylic electrophiles can be employed in this reaction, and various synthetic valuable functional groups can be tolerated. The asymmetric version of this reaction was initially researched with chiral N-heterocyclic carbene (NHC) ligands.
- Zhang, Zhen-Qi,Zhang, Ben,Lu, Xi,Liu, Jing-Hui,Lu, Xiao-Yu,Xiao, Bin,Fu, Yao
-
supporting information
p. 952 - 955
(2016/03/15)
-
- CuI/DMPAO-catalyzed N-arylation of acyclic secondary amines
-
DMPAO has been found to be a powerful ligand to enable copper-catalyzed coupling of aryl halides with aliphatic acyclic secondary amines take place under relatively mild conditions, and coupling of aryl halides with primary amines and cyclic secondary amines proceeds at low catalyst loading.
- Zhang, Yu,Yang, Xinye,Yao, Qizheng,Ma, Dawei
-
supporting information; experimental part
p. 3056 - 3059
(2012/07/28)
-
- Copper-catalyzed 1,4-addition of organoboronates to alkylidene cyanoacetates: Mechanistic insight and application to asymmetric catalysis
-
In addition: A copper/N-heterocyclic carbene(NHC)-catalyzed 1,4-addition of organoboronates to alkylidene cyanoacetates was developed, in which the catalytic cycle is proposed to consist of a transmetalation/insertion/ligand exchange. An effective asymmetric variant has also been achieved by the use of a chiral NHC ligand (see scheme). Copyright
- Takatsu, Keishi,Shintani, Ryo,Hayashi, Tamio
-
supporting information; experimental part
p. 5548 - 5552
(2011/07/30)
-
- Copper-catalyzed asymmetric addition of arylboronates to isatins: A catalytic cycle involving alkoxocopper intermediates
-
A copper-catalyzed addition of arylboronates to isatins has been developed to give 3-aryl-3-hydroxy-2-oxindoles under mild conditions. The catalytic cycle of this process has been examined through a series of stoichiometric reactions and an effective asymmetric variant has also been described by the use of a chiral N-heterocyclic carbene ligand.
- Shintani, Ryo,Takatsu, Keishi,Hayashi, Tamio
-
supporting information; experimental part
p. 6822 - 6824
(2010/10/19)
-
- Triphenylphosphine-catalyzed simple synthesis of dimethyl 1-aryl-4-ethoxy-5-oxo-4,5-dihydro-1H-pyrrole-2,3-dicarboxylates
-
Ethyl 2-arylamino-2-oxo-acetates undergo a complex reaction with dimethyl acetylenedicarboxylate in the presence of triphenylphosphine to produce dimethyl 1-aryl-4-ethoxy-5-oxo-4,5-dihydro-1H-pyrrole-2,3-dicarboxylates in good yields. Dynamic NMR study of
- Yavari, Issa,Aghazadeh, Mansoureh,Tafazzoli, Mohsen
-
p. 1101 - 1107
(2007/10/03)
-