Nicotinic acid containing pyridine nucleus having side chain at third position gives the significant effect on toxicity to the insects. Therefore, we have reported the synthesis of some nicotinic acid derivatives and their insecticidal activities. The strategy employed for the synthesis of desired nicotinic acid derivatives involved esterification of nicotinic acid. The methyl nicotinate get de...

The ground state (μg) and excited state (μe) dipole moments of two coumarin derivatives namely diethyl 2acetamido-2-((3-oxo-3H-benzo[f]chromen-1-yl)methyl)malonate (2DAM) and ethyl2-((7-methyl-2-oxo-2H-chromen-4yl)methyl)-3-oxobutanoate(2EMCO) were estimated in various solvents. The dipole moments were estimated from Lippert, Bakhshiev and Kawaski-Chamma-Viallet equations by using the variation...

The domino three-component coupling reaction of arynes with DMF and active methylenes or methines was studied as a highly efficient method for preparing heterocycles. Coumarin derivative 5 was formed when diethyl malonate (2) or α-bromomalonate (3) were used as a C2-unit. In contrast, dihydrobenzofurans 7a and 7b were obtained by using α-chloroenolates generated from α-chloromalonates 4a and 4b...

The title compound, C(19)H(15)Cl(2)N(3)O(2), was obtained by a one-step cyclo-condensation of 2-amino-1-(4-chloro-phen-yl)imidazoline with diethyl (2-chloro-benz-yl)malonate under basic conditions. In the crystalline state, the mol-ecule exists as the 7-hy-droxy-5-oxo tautomer. The dihedral angles between the fused imidazopyrimidine and aromatic chloro-phenyl and chloro-benzyl rings are 14.2 (1...

A set of novel series of 1,3,4-thiadiazolyl-sulfanyl-4,5-dihydropyridazin-3(2H)-ones with anticipated antimicrobial activity has been synthesized. The synthetic protocol of the targeted compounds was accomplished by treating β-aroylacrylic acid 1 with 5-amino-1,3,4-thiadiazole-2-thiol (2) to afford the thia-Michael adduct 3. Afterwards, the obtained thia-Michael adduct 3 was cyclized to 4,5-dih...

In the title compound, C(29)H(27)NO(6)S, the sulfonyl-bound phenyl ring is almost perpendicular to the indole ring system [dihedral angle = 87.96 (6)°], while the benzyl-phenyl ring is oriented at an angle of 76.8 (7)°. An intra-molecular C-H⋯O hydrogen bond is observed. In the crystal structure, mol-ecules are linked into a zigzag C(10) chain along the b axis by inter-molecular C-H⋯O hydrogen ...

Many chemically synthesized xenobiotics can significantly inhibit the vitality of parasitic nematodes. However, there is yet too little research on toxicity such contaminating compounds toward Compounds that are present in plants able to organisms as well. According results our laboratory studies toxicity, following caused no decrease larvae Strongyloides papillosus and Haemonchus contortus: me...

The chemical composition of fulvic acid (FA) with a molecular weight below 500 (FA-500) was analyzed, and its activity on promoting the seed germination of wheat was studied in this paper. The FA-500 was obtained by membrane separation technology and qualitatively and quantitatively analyzed by using gas chromatography-mass spectrometry combined with the retention index. Forty-seven constituent...

In the title compound, C(22)H(21)N(3)O(6)Se, the heterocyclic ring makes dihedral angles of 50.03 (11) and 67.75 (11)°, respectively, with the benzene and phenyl rings. The terminal C atoms of the ester groups are disordered over two positions: the site occupancies for the C atoms are 0.62 (3)/0.38 (3) and 0.48 (3)/0.52 (3). In the crystal structure, weak intra- and inter-molecular C-H⋯O inter-...

In the title compound, C(24)H(25)NO(7)S, the sulfonyl-bound phenyl ring is approximately perpendicular to the indole ring system [dihedral angle = 87.72 (5)°]. The methyl group of one of the ester units is disordered over two positions with occupancies of 0.527 (13) and 0.473 (13). An intra-molecular C-H⋯O hydrogen bond is observed. In the crystal structure, mol-ecules are linked into a ribbon ...