According to current usage, the term antibiotic designates a product of the metabolism of one micro6rganism that is antagonistic to the continuation of the normal life activities of another micro6rganism when present even in very low concentrations. Since the early literature on antibiosis has been covered extensively (4, 7, 29, 70, 71, 145, 190), we shall dispense with this phase of the subjec...

The Tsuji–Trost reaction of allylic acetates with nucleophiles is optimized using a task-specific ionic liquid (TSIL)-palladium complex in very efficient manner. Several and systems are studied obtaining high yields the corresponding products total n-selectivity. surveyed employing inexpensive alcohols 3-acyloxindole derivatives affording expected allylated molecules after deacylative process. ...

pet wastes from post consumer bottles can be chemically degraded into some compounds such as oligomers and some monomers such as bishydroxy ethyl terephthalate(bhet)by some catalysts(zn, co, pb and mn acetates) in ethylene glycol at 189 oc under n2 atmospheric pressure. the compounds obtained in the chemical depolymerization can be used as plasticizers in paint, fibbers, rubbers and plastic ind...