期刊
CHINESE CHEMICAL LETTERS
卷 23, 期 5, 页码 561-564出版社
ELSEVIER SCIENCE INC
DOI: 10.1016/j.cclet.2012.03.005
关键词
2H-1,2,4-Thiadiazolo[2,3-a]pyrimidine; Synthesis; Ultrasound; Bioactivity
资金
- Shandong Province Natural Science Foundation [ZR2009BM044]
Eight novel 5,7-disubstituted-2-{5-methyl-3-(4-trifluoromethylphenyl)isoxazol-4-ylcarbonylimin} -2H-1,2,4-thiadiazolo[2,3-a]pyrimidines were synthesized by multi-step reactions in yields 68-85%. Reactions were carried out either by ultrasound irradiation or conventional method, and found it was faster and more efficient under ultrasonic irradiation. Preliminary herbicidal activities against Echinochloa crus-galli, Digitaria sanguinalis and Chenopodium serotinum were also evaluated by flat-utensil method, and the results indicated that the target compounds exhibited significant activities, some were even higher than the control herbicide. (C) 2012 Lin Jiang. Published by Elsevier B.V. on behalf of Chinese Chemical Society. All rights reserved.
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