The synthesis and characterisation of two groups nonsymmetric dimers, the 1-(4-cyanobiphenyl-4‘−yloxy)-ω-(4-butyl, 4-(1-methylpropyl) or 4-t-butylanilinebenzylidene-4’−oxy)alkanes, 1-(4-cyanobiphenyl-4‘−yl)-ω-(4-butyl, are reported. length parity flexible spacer is varied. tert-butyl homologues show higher melting points than corresponding sec-butyl n-butyl substituted suggesting that chain bra...

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...

volatile constituents of the seed kernel and leaf of cultivated moringa peregrina (forssk.) fiori, agricolt collected after hydrolysis were analyzed by gc and gc/ms. five glucosinolate degradation products which constituted almost the whole isolated oil of the seed kernel were identified to be: isobutyl isothiocyanate (94.0%), isopropyl isothiocyanate (4.9%), sec-butyl isothiocyanate (0.5%), n-...

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 hydrochl...

The title compound, [Sn(C(6)H(5))(3)(C(11)H(14)NS(2))], features a tetra-hedrally coordinated Sn atom, as the dithio-carbamate ligand coordinates in a monodentate fashion. Due to the proximity of the non-coordinating thione S atom, distortions from ideal tetra-hedral geometry about the metal atom are evident with the widest C-Sn-S angle being 117.26 (5)°. In the crystal, mol-ecules are linked b...

The primary products of n-butoxy and 2-pentoxy isomerization in the presence and absence of O(2) have been detected using pulsed laser photolysis-cavity ringdown spectroscopy (PLP-CRDS). Alkoxy radicals n-butoxy and 2-pentoxy were generated by photolysis of alkyl nitrite precursors (n-butyl nitrite or 2-pentyl nitrite, respectively), and the isomerization products with and without O(2) were det...

The abstraction of the active hydrogen of RCOCH2R by a base catalyst B M , and the subsequent formation of the enolate [RCOCHR ] M are described in Eq. 1 (deprotonation process). Secondly, the creation of a C–N bond, in which [RCOCHR ] M reacts with R ONO to form complex [RCOCHNO(OR )R ] M , is shown in Eq. 2 (C–N bond formation process). Finally, the reaction between [RCOCHNO(OR )R ] M with ba...