The oxidative dissolution of cobalt oxalate and manganese oxalate in acetic acid solutions with a flow of oxygen–nitrogen mixing gas at pressure of 1.5 MPa was studied. Experiments investigating the following parameters: the stirring speed, the reaction temperature, the concentration of oxygen ...

The microwave synthesis of MnC2O4·2H2O nanoparticles was performed through the thermal double decomposition of oxalic acid dihydrate (C2H2O4·2H2O) and Mn(OAc)2·4H2O solutions using a CATA-2R microwave reactor. Structural characterization was performed using X-ray diffraction (XRD), particle s...

Rod-shaped nanostructures of manganese oxalate (MnC2O4) were synthesized via mild thermal precipitation and aging process. Chemical composition of the MnC2O4 nanorods was confirmed using Fourier transform infra-red (FTIR) spectroscopy and energy dispersive X-ray spectroscopy (EDS). X-ray diffrac...

Three manganese sulfate-oxalates, namely, H2pip·Mn2(SO4)2(ox)(H2O)2·2H2O (1), H3ipa⋅Mn2(SO4)(ox)2.5·H2O (2), and H3dpta⋅Mn2(SO4)2(ox)1.5(H2O)3 (3), were prepared under solvent-free conditions, where pip = piperazine, ox = oxalate, ipa = 3,3′-iminobis(N,N-dimethylpropylamine), and dpta = dipr...

It is found that the known regular structures of MnC2O4·2H2O (I) do not allow to refine the powder X-ray pattern of (I) properly using the Rietveld method. Implementation of order-disorder scheme [28] via the including of appropriate displacement vector improves the refinement results. Also it ...

A new class of functionalized 3-(benzofuran-2-yl)-5-(4-methoxyphenyl)-4,5-dihydro-1H-pyrazole scaffolds (4a–q) was synthesized by a four step reaction in good yields. Initially, o-alkyl derivative of salicyaldehyde (1) readily furnished corresponding 2-acetyl benzofuran (2) on treatment with po...

Quantum chemistry calculations have been performed by using Gaussian03 program to compute optimized geometry, harmonic vibrational frequency of 2-Dicyanovinyl-5-(4-methoxyphenyl)thiophene (C15H10N2OS). Theoretical vibrational spectra were interpreted by means of potential energy distribution usi...

Heterocyclic compounds are the most attractive class for researchers due to their biological activities. In the undertaken research, a number of N-(5-chloro-2-methoxyphenyl)-4-(5-substituted-1,3,4-oxadiazol-2-ylthio)butanamide (6a–k) compounds were prepared by converting multifarious phenyl/ary...

A myomodulin peptide has been suggested to mediate the response of the giant glial cells to stimulation of the Leydig interneuron in the central nervous system of the leech Hirudo medicinalis [Eur. J. Neurosci. 11 (1999) 3125]. We have now studied the glial response to the endogenous leech MM pe...

Important insights into mechanisms by which neuromuscular activity can be modulated have been gained by the study of experimentally advantageous preparations such as the ARC neuromuscular system of Aplysia. Previous studies have indicated that one source of modulatory input to the ARC muscle is ...

Greenberg, M. J., K. E. Doble, W. Lesser, T. D. Lee, N. A. Pennell, C. G. Morgan and D. A. Price.Characterization of myomodulin-related peptides from the pulmonate snail Helix aspersa. Peptides 18(8) 1099–1106, 1997.—Three myomodulin-related peptides—pQLSMLRLamide, PMSMLRLamide, and SLGMLRLam...

Wang, Y., D. A. Price and C. L. Sahley. Identification and characterization of a myomodulin-like peptide in the leech. Peptides 19(3) 487–493, 1998.—A novel myomodulin-like peptide, GMGALRLamide, has been purified and sequenced from extracts of 1000 medicinal leech nerve cords. Synthetic leech...

A nickel(II)-catalyzed alkynylation/annulation of aryl carboxamides assisted by an N, S-bidentate directing group with terminal alkynes is described. This protocol provides an effective method to selectively furnish a series of biologically 3-methyleneisoindolin-1-one derivatives bearing methylt...

The conversion of geranyl pyrophosphate to (+)-cis- and (+)-trans-sabinene hydrate by a partially purified cyclase from sweet marjoram (Majorana hortensis) is considered to proceed by the initial ionization and isomerization of the substrate to (−)-(3R)-linalyl pyrophosphate and the subsequent c...

Geranyl pyrophosphate:(−)-endo-fenchol cyclase catalyzes the conversion of geranyl pyrophosphate to (−)-endo-fenchol by a process thought to involve the initial isomerization of the substrate to the tertiary allylic isomer, linalyl pyrophosphate, and the subsequent cyclization of this bound inte...

The toxicity of the ixodicidal carbamates ethyl-4-bromophenyl carbamate (LQM 919), ethyl-4-chlorophenyl carbamate (LQM 996) and propoxur on Eisenia foetida adults was evaluated to estimate their ecotoxic potential. The earthworm mortality and weight loss produced by the three evaluated carbamate...

The aminolysis of ethyl acetate was promoted significantly via continuous reaction in a tubular reactor. N-propylacetamide was thus synthesized without presence of solvent and catalyst. The optimum conditions were obtained as follows: the reaction temperature is 218 °C, the reaction pressure is...

A bulky, inexpensive and simple bidentate ligand 1,4-bis(2-hydroxy-3,5-di-tert-butylbenzyl)piperazine (1) has been synthesized and characterized. The palladium catalyst was formed by combination of 1 with [Cl2Pd(COD)] in a ratio of 1:1, tested in the Suzuki–Miyaura and Mizoroki–Heck cross-coup...

Using segment-directed mutagenesis, a temperature-sensitive mutant of the gene that encodes the cis-acting RepA1 initiation protein of the IncFII plasmid NR1 was isolated. The mutant protein was unable to promote initiation of plasmid replication in vivo at 42 °C. Both the wild-type and the mut...

A quantitative bioassay utilizing staining of plant cell suspension cultures of Sinapis alba was employed to establish a structure-phytotoxic activity correlation among destruxin B, homodestruxin B, and desmethyldestruxin B, toxins produced by Alternaria brassicae (Berk.) Sacc., the causative ag...