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5(or 6)-Benzofurozan was synthesized by the reaction of aniline and n-butyl alcohol. And benzofuroxan was propared by thermal decomposition of onitrophenylazide. Infrared, nuclear magnetic resonance spectrophotometers, and elemental analyzer were empolyed to indentify the products concerned with the synthetic processes. A mechanism for this reaction is suggested.
The reaction of 3-methoxycarbonylmethylene-2-oxo-1,2,3,4-tetrahydroquinoxaline with p-butylbenzenediazonium chloride gave α-arylhydrazonoester , whose reaction with hydra-zine hydrate afforded α -arylhydrazonoacylhydrazide . The reaction of α-aryl hyd razonoacylh-ydrazide with sodium nitrite in aqueous acetic acid provided a-arylhydrazonoacylazide and then its refluxing in N , N - dimethylformamide furnished 1-aryl-3-quinoxalinyl-1,2,4-triazole .
This experiment was conducted under the joint research work on lowland rice fertilization. The result was summarized as described below. 1. Nitrogen played a determinative role in growth, tillering, and yield of rice plants. 2. The adequate amount of nitrogen to be applied at the time of basic application here was considered to be over 3 kg per 10 are. 3. The uptake of nitrogen from the fertilizer by rice plants was most efficient when the fertilizer was applied at the time of prime growth. However, the most efficient utilization of nitrogen did not necessarily acompany the maximum yield of rice. 4. The basic application and carly top dressing of the fertilizer appeared to be efficient for betterment of rice yeild. 5. the efficiency of phosphorus was not likely affected by time and rate of nitrogen application.
1. Among the three strains of yellow Aspergilli and six strains of black Aspergilli, we selected three starains, i.e. Aspergillus inuii, Aspergillus niger NRRL 337 and 330. which showed the higher value in alpha-amylase and maltase activities by the submerged culture using modified Corman's medium. 2. It was found that A. inuii is more suitable strain for the production of alcohol as saccharifying agent than other two strains. 3. It was pointed out that the saccharifying activity of the mixed culture, which was made with the three best strains, in the same medium. was not found any distinct difference from that of the respective culture.