Arenediazonium o-benzenedisulfonimides have been used as efficient electrophilic partners in Cu(I) catalysed Ullmann-type coupling. The synthetic protocols are mild and easy, produced either N-alkylanilines, aryl ethers, or thioethers fairly good yields (18 positive examples, average yield 66%). o-Benzenedisulfonimide was recovered at the end of reactions reused to prepare starting salts for fu...

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Klebsiella Pneumoniae is a non-motile gram-negative bacterium that belongs to the family Enterobacteriaceae and that has become a well-recognized cause of nosocomial infections. Multi-drug resistance Klebsiella has been recognized as a cause of hospital acquired infections world wide. (Nima et al., 2008; Keynan and Rubinstein, 2007). They cause different kinds of infections, for example, pneumo...

Leptospirosis is a zoonotic and an emerging infectious disease caused by the pathogenic Leptospira species (Levett, 2001). Leptospirosis is transmitted directly or indirectly through urine of infected animals or environments contaminated with urine of reservoir animals (Bharti et al., 2003; Ullmann & Langoi, 2011). Serovar identification of Leptospira isolates constitutes an important component...

A systematic study is reported of the photochemical properties of the multi-azobenzene compounds bis[4-(phenylazo)phenyl]amine (BPAPA) and tris[4-(phenylazo)phenyl]amine (TPAPA) compared to the parent molecule 4-aminoazobenzene (AAB). The bis- and tris-azobenzenes were synthesised by a variant of the Ullmann reaction and exist in their stable all-E forms at room temperature. Striking changes in...