High-yielding syntheses of two unpublished series of amino-1,5-benzodiazepines derivatives 3 and 1,2,3-benzotriazoles 4 bearing a dimedone moiety are respectively reported. Derivatives 3 were obtained by intramolecular cyclisation using cyanogenbromide of enaminone 2. On the other hand, when enaminones 2 were treated with sodium nitrite under acidic conditions, cyclisation led to benzotriazole 4.

1. Oligomycin-resistant mutants of Saccharomyces cerevisiae strain D273-10B/A1 have been assigned to three previously defined mitochondrial genetic loci, olil, oli2 and oli3. Standard crosses of o/iJ-resistant mutants yielded a low percentage of sensitive recombinants indicating that the mutations were in closely linked but separate alleles. 2. The oligomycin-resistant mutants were used to stud...

Heavy  metal  pollution  is  propagating  throughout  the  world  with  the  enlargement  of  industrial activities.  The  elimination  of  heavy  metal  ions  from  industrial  wastewaters  has  drawn  much attention  because  of  the  hazardous  effects  of  the  heavy  metal  ions  on  different  organisms. According to these facts, poly (2, 2, 3, 3- tetracyanocyclopropyl) phenyl acryl...