Showing papers in "Journal of Organometallic Chemistry in 2000"

TL;DR: In this paper, a review of known preparative procedures of transition-metal N-heterocyclic carbenes has been presented, focusing exclusively on the preparation of complexes of nitrogen heterocycles.

TL;DR: The known ligands HC(pz)3, HC(3,5-Me2pz), HC( 3,3-Me 2pz, 3,5,Me 3 pz), and HC(Phpz 2py)3 were prepared in CHCl3-H2O using pyrazole, an excess of Na2CO3, and tetra-n-butylammonium bromide as the phase transfer catalyst as discussed by the authors.

TL;DR: The sterically demanding nucleophilic carbene ligand 1,3-bis(2,6-diisopropylphenyl)imidazol-2-ylidene (IPr, 4) has been synthesized as discussed by the authors.

TL;DR: The metal-catalyzed borylation of alkenes, alkynes, and organic electrophiles with BB compounds was developed for the synthesis of organoboronic esters from simple organic substrates as discussed by the authors.

TL;DR: Palladium(0) complexes of N-heterocyclic carbenes (NHC) are easily obtained starting from the free carbene and bis(tri-orthotolylphosphine)palladium by ligand exchange as discussed by the authors.

TL;DR: In this article, the preparation of four dimeric nickel complexes and three monomeric palladium(II) complexes bearing didentate pyridinylimine ligands is described.

TL;DR: In this paper, various methods used for the enhancement of reactivity and selectivity of NaBH4 in organic synthesis are described, and the selectivities realised in such reductions can be enhanced by adding another additive.

TL;DR: In this paper, a review deals with new synthetic methods for introducing Group 16 elements into organic molecules, especially, synthetic reactions based on the activation of Group 16 heteroatom compounds by transition metal catalysts.

TL;DR: The chiral helical diphosphine 2,15-bis(diphenylphosphino)-hexahelicene (PHelix) is an excellent ligand in palladium catalyzed kinetic resolution involving allylic substitution and appears to undergo chelation, which means that it behaves as a chiral monophosphine.

TL;DR: In this article, the structure and reactivity of representative compounds with tethered NR 2, OR, PR 2, SR, and CHCHR groups are described; one, two (in 1,3 position) or five donors are attached with C n or SiC n spacers to the Cp fragment.

TL;DR: In this paper, two series of particular examples of reactions used in bioorganometallic chemistry are described, one based on a decomplexation-complexation reaction, indicates how, starting from a cymantrenyl derivative, a range of organometallic complexes bearing various metals can be prepared.

TL;DR: Au(4-4,4′-CCC 6 H 4 NO 2 )(PPh 3 ) 1 3 as mentioned in this paper has the largest σ 2 /MWt (two-photon absorption cross-section/molecular weight) value observed thus far for an organometallic complex.

TL;DR: In this article, the authors present the recent progress in the area of endohedral metallofullerenes in the past several years and summarize the important results as follows: (1) Many metals including Group 3 metals, most of the lanthanide series elements, Group 2 metals, and some of their isomers have been successfully isolated and purified by a two-step or several-step HPLC technique.

TL;DR: In this paper, the distorted trigonal planar nickel atom was attached to an η5-Cp, a carbene, and a chloride ligand, and the structure of 5 was determined by X-ray crystallography.

TL;DR: Improved syntheses for the dimeric compounds [Pd2(μ-X)2(PBut3)2] (X = Br, I) have been developed and the X-ray crystal structure for the Dimer with X = 1 is reported as mentioned in this paper.

TL;DR: The rhodium-catalyzed addition reactions of trimethyl(phenyl)stannane and sodium tetraphenylborate to N -phenylsulfonyl aldimines provided R(Ph)CHNHSO 2 Ph in high yields as mentioned in this paper.

TL;DR: In this paper, arylthio substituted ruthenium carbenes and 2-pyridylethyl-thylanyl substituted RUThenium carbene complexes have been characterized with X-ray crystallography.

TL;DR: In this paper, the electronic and steric effects of substituents on silicon triple bonds are investigated to make disilynes synthetically accessible as stable compounds for RSiSiR.

TL;DR: Fluoroalkylated N-heterocyclic carbene complexes of palladium have been synthesized from imidazolium salts and Pd(OAc)2 as mentioned in this paper.

TL;DR: In this article, the electron substituent effect of aryldifluoroboranes (ArBF) − -group was analyzed and shown to be one of the strongest σ-electron donors.

TL;DR: In this article, three dibutyltin perfluoroalkanecarboxylates have been synthesized, characterized by H-1-, C-13-, F-19- and Sn-117-NMR, Mossbauer, IR and mass spectroscopy.

TL;DR: In this paper, the stabilisation of bridged borylenes (BX, X=various ligands) in the sphere of a transition metal was achieved for the first time in the case of bridging borylene complexes of the type [(LxM)2BX].

TL;DR: A series of substituted ferrocenyl compounds where one of the cyclopentadienyl rings is linked to an aromatic Schiff base, have been synthesized and analyzed for their second-order nonlinearity as discussed by the authors.

TL;DR: A series of sterically crowded primary pnictanes of formula ArEH2 have been synthesized and characterized by X-ray crystallography (2-6), NMR, IR spectroscopy, and by combustion analysis as mentioned in this paper.

TL;DR: A review of nucleophilic vinylic substitutions of λ3-vinyl(phenyl)iodanes is presented in this article, where β-Monoalkyl-λ3-vyliodanes undergo bimolecular n-philic substitutions (SN2) with exclusive inversion of configuration under mild conditions.

TL;DR: In this paper, the same compounds can be obtained by the non-catalytic reactions of Bu 3 SnSePh with ArN 2 BF 4 or (ArN 2 ) 2 ZnCl 4.

TL;DR: In this paper, square planar cationic rhodium(I) dicarbonyl complexes [{Rh((mim)2CH2)(CO)2+BPh4−] (1) and [{RH((mBnzim) 2CH2(CO) 2 +BPh 4−](2) are catalysts for the cyclisation of alkynoic acids to lactones.

TL;DR: In this paper, the mechanism of hydroesterification of styrene using in situ-formed Pd(OTs) 2 (PPh 3 ) 2 from PdOAc) 2, PPh 3 and TsOH in methanol has been investigated by isolation and characterisation of catalytically active intermediates.

TL;DR: A new class of chiral molybdenum and tungsten(VI) complexes of the type MO2L*2 (M=Mo, W; L*=chiral 2′-pyridinyl alcoholate), available through several synthetic pathways, and their catalytic behavior in the asymmetric epoxidation of unfunctionalized olefins are reported in this paper.

TL;DR: The homoleptic phosphinoamide complex [Zr(NPhPPh2)4] (1) and the bisamido complex [TiCl2{N(PPh 2)2}2] (2) were prepared from ZrCl4 and four equivalents of LiNPhpPh2 and from TiCl4 as mentioned in this paper.