作者:D. N. Kuznetsov、A. G. Ruchkina、K. I. Kobrakov
DOI:10.1007/s10593-011-0778-0
日期:2011.7
Treatment of 3,5-dichloropyrid-2-ylhydrazine, and of mono- and dinitrophenylhydrazines with acetoacetic ester gave hydrazones and the products of their cyclization, namely pyrazolols. It was shown that acetoacetic ester 2,4-dinitrophenylhydrazone cyclizes to the pyrazolol only by using PPA while other studied hydrazones undergo tarring under these conditions. The products of azocoupling of pyrazolols
用乙酰乙酸酯处理3,5-二氯吡啶-2-基肼,以及单和二硝基苯肼,得到及其环化产物,即吡唑。结果表明,仅通过使用PPA,乙酰乙酸酯2,4-二硝基苯基hydr就可环化成吡唑醇,而其他研究过的azo在这些条件下会脱皮。吡唑类与3-重氮基-4-羟基-5-硝基苯磺酸盐或2-羟基-5-硝基苯基重氮盐的偶氮偶联产物能够使纺织材料着色。已经研究了合成化合物的杀真菌活性。