The following new isoquinoline alkaloids have been isolated from T. fendleri: the bisbenzylisoquinoline thalidezine (IIIb), and the aporphines thaliporphine (XI) and preocoteine (XIV). Thaliporphine has been assigned a structure previously given to glaucentrine. The plant genus Thalictrum has a ...

To the best of our knowledge, this is first report describing generation of Michael acceptor via electrochemical reduction. In this work, electrochemical reduction of 4-nitroso-N,N-dimethylaniline has been studied in the presence of arylsulfinic acids in aqueous solutions. The cathodically gener...

An organic nonlinear optical material 4-(dimethylamino)benzaldehyde-2,4-dinitroaniline (DMBDNA) has been grown by slow evaporation technique. Vibrational spectral analysis has been carried out using FT Raman, FT-IR and UV–Vis spectroscopic techniques. The influence of intramolecular charge tran...

Zwitter ionic macro molecules can be prepared to provide functional materials applicable in various different fields such as catalysis, cleaning industry, textile industry, cosmetics and drugs with the enhanced solubility both in organic solvent and aqueous media. Tetra {4-[N-((3-dimethylamino)p...

Jatropha curcas is a multipurpose plant, of which the seed kernel oil (up to 60% content) has been exploited for BDF production. In this report, we explored the various kinds of minor compounds of saccharides, phytochemicals, fatty acids (FAs), and amino acids in the seed kernel using gas chroma...

3,9-Bis(2-(3-(3-tert-butyl-4-hydroxy-5-methylphenyl)propionyloxy)-1, 1-dimethylethyl)-2,4,8,10-tetraoxaspiro[5.5] undecane (Sumitomo's new antioxidant: Sumilizer GA-80) is shown to have a very effective synergistic stabilizing effect in combination with thiopropionate type antioxidants. For...

Rates of cleavage in NaOMe-MeOH at 50°C have been determined for the mono-substituted 2-trimethylsilylthiophens X·C4H2S·SiMe3-2 with X = H, 3-NO2, 3-Br, 4-Br-, and 5-NO2, -CN, -COPh, -Me, -OMe and -NMe2, and for one disubstituted compound, 4,5-Br2-C4HS-SiMe3-2. For several compounds the rate ...

A series of spirocyclic compounds inspired by Eli Lilly's phase 1 antidiabetic FFA1 receptor agonist LY2881835 was designed to include polar aromatic periphery groups and explore a possibility of building additional contacts with the target near the agonist binding site. The frontrunner com...

Direct experimental evidence for the deposition of sulfur on gold surfaces using thiobis(hexamethyldisilazane) as a new precursor is provided. The modified surfaces are characterized using cyclic voltammetry, X-ray photoelectron spectroscopy, and scanning tunneling microscopy. XPS and electroche...

The organozinc derivative (2a) of ethyl α-bromomethyl acrylate is not nucleophilic towards haloalkanes but can be alkylated with chlorotrimethylsilane. 2a is unreactive towards carbonoxygen single bonds and is unsuitable for conjugate addition (α-enones and α,β-ethylenic esters). Its acyla...

The action of hydrogen halides, sulfur and phosphorus halides, and halotrimethylsilanes on 5-(hydroxymethyl)-2-furancarboxaldehyde (1) led to the corresponding 5-(chloromethyl)- (2) or 5-(bromomethyl)-2-furancarboxaldehyde (3). Thus, treatment of 1 in diethyl ether solution with gaseous dry hydr...

The stepwise cleavage of alkyl groups from (bromomethyl)trimethylsilane and (iodomethyl)trimethylsilane by fluorosulfonic acid has been studied with proton magnetic resonance. Exclusive methyl cleavage is observed in the first reaction of both compounds. The reaction of (bromomethyl)dimethylsily...

The infrared spectra (3500–400 cm−1) of 3-methyl-1-butene, CH2CHCH(CH3)2, and dimethylvinylsilane, CH2CHSiH(CH3)2, dissolved in liquid xenon and krypton, respectively, have been recorded. From temperature (−55 to −110 °C) dependent FT–IR spectra of xenon solutions, it is shown that the ci...

The infrared spectra of dimethylvinylsilane and dimethylvinylsilane-d1 (CH2CH(CH3)2SiH(D)) were recorded in the vapour phase and as amorphous and crystalline solids in the 4000–50 cm−1 range. Moreover, they were isolated in argon and nitrogen matrices at ca. 5 K, and the parent molecule was d...

Ionic complexes, [Q] [Sb(dmit)3] [Q = 1,4-Me2-pyridinium of NEt4], have been isolated from the reaction of [Q]2 [Zn(dmit)2] and SbI5, prepared in situ from SbI3 and I2 (H2-dmit = 4,5-dimercapto-1,3-dithiole-2-thione). A crystal structure determination of [1,4-Me2-pyridinium] [Sb(dmit)] revealed ...

Triboluminescent phenomenon of 1,4-dimethylpyridinium tetrakis(then oyltrifluoroacetonato) europate (1) was firstly observed. Its crystal structure and the triboluminescent spectrum were successfully determined. The crystal is centrosymmetric and the Eu atom exhibits an eight-coordinate tetragon...

Alkylation of PdCl2(dotpm) (dotpm = bis(di-ortho-tolylphosphino)methane) with n-butyllithium produces the binuclear Pd(0) complex Pd2(μ-dotpm)2 and the elimination byproducts 1-butene, cis-2-butene, trans-2-butene, butane, and octane. The dibutyl complex, Pd(dotpm)(n-Bu)2, is presumed to be the...

The chlorination kinetics of propanoic acid was investigated in a semibatch reactor at 70–130°C using chlorosulphonic acid as a catalytic agent and oxygen as a radical trapper. 2-Monochloropropanoic acid was obtained as the main product and 2,2- and 2,3-dichloropropanoic acids appeared as by-p...

Aquatic and terrestric humic material produce the same major products on chlorination, with the exception of n-fatty acids which were found mostly after the chlorination of terrestric material.The cyano-acids could be detected selectively after gas chromatography by their enhanced relative respo...

2-Cyclohexenyl-1-phenyl-1H-benzo[d]imidazole (Hcyclopbi) and its heterocyclometalated iridium complexes bis[2-cyclohexenyl-1-phenyl-1H-benzo[d]imidazole](acetylacetonate)iridium(III) [(cyclopbi)2Iracac] and bis[2-cyclohexenyl-1-phenyl-1H-benzo[d]imidazole][2-(3-(trifluoromethyl)-1H-pyrazol-5-yl)...