an efficient synthesis of 2,4,5-trisubstituted and 1,2,4,5-tetrasubstituted imidazoles by one-step condensation of  an aldehyde, benzil, ammonium acetate and primary amine in the presence of nanocrystalline magnesium aluminate under microwave irradiation is described. the advantages of this catalyst are including simple work-up, low cost and reusability. compared with conventional methods, the ...

regarding the green chemistry's goals, dicationic magnetic room temperature ionic liquid open up new avenue to introduce an amazing and efficient system for facilitating catalyst recovery in different organic reactions. ability of this dicationic magnetic room temperature ionic liquid catalyst in the one-pot three-components condensation reaction of benzil, aromatic aldehyde, and ammonium aceta...

Bunga melati memiliki kandungan eugenol, linalool, metil salisilat, benzil alkohol dan indol. Ekstrak bunga konsentrasi 30% mampu mencegah pertumbuhan bakteri Propionibacterium acne penyebab jerawat dengan diameter zona hambat 5,58 mm. Penelitian ini bertujuan untuk mengetahui formulasi gel totol ekstrak (Jaminum sambac L) evaluasi sifat fisik. etanol diperoleh metode maserasi menggunakan pelar...

Annelation of the coumarin ring was performed via cathodic reduction of 3-nitrocoumarin derivatives (1-4) by controlled potential. The reduction of 3-nitro-4-aminocoumarin, 1, gave 3,4-diaminocoumaDin, 5, and subsequent treatment with formic acid furnished tlie novel 4H [1] benzopyrano [3,4-b] imidazole-4-on ring system 6. The condensation of 5 with trifluoracetic acid anhydride, acetic acid an...

A new series of Schiff base Cu(II), Ni(II) and Zn(II) complexes have been designed and synthesized using the ligand(1,2,8,9-Tetraphenyl-3,7-diazaduohepta-2,7-diene-1,9-dione) which is obtained from the condensation of benzil and 1,3-diaminopropane. The ligand and their complexes have been characterized with the aid of FT-IR, NMR, Mass, elemental analysis, EPR and absorption studies. The interac...

The reaction of benzil, 1-alkyl-2-arylethanediamine dihydrochloride and sodium acetate trihydrate gave the target molecule dihydropyrazine derivatives 30-34. The compounds have been characterized on the basis of their FT-IR, 1H NMR and 13C NMR spectroscopies. All the compounds are screened for their antibacterial activity against Staphylococcus aureus, Klebsiella pneumoniae, Pseudomonas aerugin...

Novel A–p–D–p–A V-shaped 3,6-bis(phenylethynyl)carbazole based chromophores were designed and synthesized as two-photon polymerization (TPP) initiators combining a large twophoton absorption cross-section with facilitated radical formation. 9-Benzyl-3,6-bis(4nitrophenylethynyl)carbazole (4d) shows a strong two-photon absorption around 800 nm and exhibits very high two-photon polymerization init...

Bragg grating in a single-mode photosensitive polymer optical fiber (POF) with benzil dimethyl ketal (BDK)-doped in core has been inscribed through the Sagnac ring interference method. The Bragg wavelength of grating is about 1570nm. The stress and strain response of fiber Bragg grating (FBG) has been studied respectively. By fitting the experimental result, the strain sensitivity of FBG in POF...