Study of Electron-Impact Fragmentation of Benzothiazole Derivatives
苯并噻唑衍生物的电子碰撞裂解研究
Synthesis of pyrazole- and thiazole-annulated 3-R-1,5-dinitro-3-azabicyclo[3.3.1]nonanes
作者:A. V. Puchnin、M. A. Bastrakov、A. M. Starosotnikov、S. V. Popkov、S. A. Shevelev
DOI:10.1007/s11172-012-0086-6
日期:2012.3
The previously unknown 3-R-1,5-dinitro-3-azabicyclo[3.3.1]nonanes fused to the pyrazole or thiazole rings were synthesized by the reductive cyclization of m-dinitroindazoles and benzothiazoles. The method is based on the reduction of carbon-carbon bonds in the benzene ring, which are activated by the meta-nitro groups, with NaBH4 followed by the Mannich reaction with formaldehyde and primary amines.
Microbial screening of novel synthesized formazans having amide linkagesΦ
作者:Krunal G. Desai、Kishor R. Desai
DOI:10.1002/jhet.5570430440
日期:2006.7
Formazans 5(a-j) have been prepared by the condensation between schiff base 3 and diazonium salt of substituted 2-amino benzothiazole 4(a-j). The intermediate schiff base 3 was synthesized by the condensation of p-nitrobenzolyhydrazide 1 with thiophene-2-aldehyde 2. All the compounds have been screened for their antifungal activity against Candida albicans (ATCC-64550), Candida krusei (ATCC-14243)
甲臜5(AJ)已经制备由席夫碱之间的缩合3和苯并噻唑取代的2-氨基的重氮盐4(AJ) 。中间席夫碱3是通过对硝基苯甲酰肼1与噻吩-2-醛2的缩合反应合成的。筛选了所有化合物对白色念珠菌(ATCC -64550),克鲁斯假丝酵母(ATCC-14243)和副念珠菌(ATCC-22019)的抗真菌活性以及对大肠杆菌(ATCC-6538),金黄色葡萄球菌(ATCC )的抗菌活性-6538),铜绿假单胞菌(ATCC-1539)和枯草芽孢杆菌(ATCC-6633)。合成化合物5(aj)的结构已根据其元素分析和光谱数据(UV,IR,1 H NMR,13 C NMR和质量)进行了表征。
2-hydrazono-4,6-dinitrobenzthiazolones useful to form dyestuffs and as
申请人:Bayer Aktiengesellschaft
公开号:US04962040A1
公开(公告)日:1990-10-09
2-Hydrazono-4,6-dinitrobenzthiazolones of the formula ##STR1## in which X.sub.1 represents hydrogen, C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.4 -hydroxyalkyl, C.sub.1 -C.sub.4 -sulphoalkyl or C.sub.1 -C.sub.4 -sulphatoalkyl, and X.sub.2 represents hydrogen or --SO.sub.2 X.sub.3, where X.sub.3 may represent hydrogen, C.sub.1 -C.sub.8 -alkyl or optionally substituted aryl and X.sub.1 also represents a double bond between the cyclic nitrogen atom and the carbon atom 2 according to the formula II below: ##STR2## where X.sub.2 has the meaning specified under the above formula. These hydrazones may be employed in the preparation of azo dyestuffs and as color formers for detecting of biological substances, and in the determination of H.sub.2 O.sub.2.
Die Erfindung betrifft Verbindungen der allgemeinen Formel I
in der
D der Rest einer Diazokomponente,
R1 Wasserstoff, Methyl, Ethyl, Methoxy oder Ethoxy,
R2 Wasserstoff, Chlor, Methyl, Methoxy, NHSO2-C1- bis -C4-alkyl oder C-Acylamino und
X Wasserstoff, Methyl, Ethyl, Chlor, Brom oder Nitro sind.
Die erfindungsgemäßen Verbindungen eignen sich insbesondere zum Färben synthetischer Polyester.
本发明涉及通式 I 的化合物
其中
D 是重氮组分的基团、
R1 是氢、甲基、乙基、甲氧基或乙氧基、
R2 是氢、氯、甲基、甲氧基、NHSO2-C1-至-C4-烷基或 C-酰氨基,以及
X 是氢、甲基、乙基、氯、溴或硝基。
本发明的化合物特别适用于合成聚酯的着色。