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Highly stereoselective synthesis of 1,4-bifunctional compounds was accomplished via 1,2-asymmetric induction to α-oxyaldehyde and α-oxyketone followed by regio- and diastereoselective Pd-catalyzed allylic substitution reaction. We found that trifluoroacetate is a suitable leaving group for the allylic substitution reaction. Various nucleophiles containing carbon, nitrogen, and sulfur can be applied...
Studies were made on a water treatment process which used hollow fiber microfiltration membranes for potable water. The influent, which was from a eutrophic lake named Kasumigaura, was provided directly into the treatment system, and no pre-treatment such as coagulation was done. Dead-end filtration was carried out under constant rate permeation, and membranes were washed by air-scrubbing. The trans-membrane...
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