N-hydroxyimides are widely known as organocatalysts for aerobic oxidation and oxidative coupling reactions, in which corresponding imide-N-oxyl radicals play the role of catalytically active hydrogen atom abstracting species. The drawbacks many poor solubility low polarity solvents limited activity cleavage unactivated C–H bonds. To overcome these shortcomings, we have synthesized a new lipophi...

This paper investigates the effects of substituents in PNP-type ruthenium complexes catalytic hydrogenation CO2 to formate using DFT method. Six groups were considered as linked P atom PNP ligand: hydrogen, methyl, iso-propyl, tert-butyl, cyclopentyl, and cyclohexyl. The substituent analyzed from perspectives steric hindrance promotion hydrogen bonding. With joint functions bonding during coord...

The aromatic C-H silylation of five-membered heteroarenes with 1,2-di-tert-butyl-1,1,2,2-tetrafluorodisilane regioselectively proceeded at 120 degrees C in octane in the presence of a catalytic amount of iridium(I) complexes generated from 1/2[Ir(OMe)(COD)]2 and 2-tert-butyl-1,10-phenanthroline.

The acute intravenous toxicities of a selection of three potential long-acting local anaesthetics belonging to the series of2- phenoxyethyldialkylamine were determined in mice. Two of the compounds were tertiary amines and the third a quaternary ammonium derivative.The I.V. median lethal dose, (LDso) of one of the tertiary compounds, 21A [N, N- diethyl-2- (2,6- diisopropyl) ethyl amine hyd...

A series of enantiomerically pure mono- and bis-aryl tert-butyl sulfoxides were synthesised to promote the enantioselective allylation of aldehydes with allyltrichlorosilane. Moderate to good yields and modest to high enantioselectivities were achieved. The absence of nonlinear effect, spacer effect, promoter loading and concentration effect indicate that only one molecule of aryl tert-butyl su...

The interpretation of the ultrafast luminescence decay in [Re(Br(CO)3(N^N)] complexes as a new group of chromophoric imidazo[4,5-f]-1,10-phenanthroline ligands, including 1,2-dimethoxy benzene, tert-butyl benzene (L4) and 1,2,3-trimethoxy benzene, tert-butyl benzene (L6), was studied. Fac-[Re(Br(CO)3L4 and L6] with different aryl groups were calculated in singlet and triplet excited states. The...

The name of one of the authors in the paper by Kluge et al. [Acta Cryst. (2011), E67, o2143] is corrected.[This corrects the article DOI: 10.1107/S1600536811028947.].

Abbreviations used: Acm, acetamidomethyl; Boc, tert-butoxycarbonyl; Bzl, benzyl; Bzl(4-Me), 4-methylbenzyl; DPDS, di(2-pyridyl)disulfide; DMSO, dimethylsulfoxide; Fmoc, 9-fluorenylmethoxycarbonyl; Mob, 4-methoxybenzyl; Npys, 3-nitro-2-pyridylsulfanyl; Pys, 2-pyridylsulfanyl; StBu, tert-butylsulfanyl; sec, selenocysteine; tBu, tert-butyl; TFA, trifluoroacetic acid; TfOH, trifluoromethanesulfonic...

The mercury(II) complex of 2,2'-(5-tert-butyl-1,3-phenyl-ene)bis-(1-pentyl-1H-benz-imidazole), namely catena-poly[[dihalogenido-mercury(II)]-μ-2,2'-(5-tert-butyl-1,3-phenyl-ene)bis-(1-pentyl-1H-benzimidazole)-κ2N3:N3'], [HgBr1.52Cl0.48(C34H42N4)], 2, has a polymeric structure bridging via the N atoms from the benzimidazole moieties of the ligand. The compound crystallizes in the ortho-rhom-bic ...