Synthesis,Crystal Structure and Biological Activity of N-(2,6-Difluorobenzoyl)-N'-[5-(4-trifluoromethyl-phenyl)-1,3,4-thiadiazol-2-yl]ure.pdfVIP
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Synthesis,Crystal Structure and Biological Activity of N-(2,6-Difluorobenzoyl)-N'-[5-(4-trifluoromethyl-phenyl)-1,3,4-thiadiazol-2-yl]ure.pdf
3O卷 6期 结 构 化 学 (JIEGOUHUAXUE) 、,01.3O.No.6
Chinese Struct. Chem. 848 852
2Ol1.6
Synthesis,CrystalStructureandBiologicalActivityof
N-(2,6。Difluorobenzoy1)-N一I5-(4一trifluoromethyl-
pheny1).1,3,4.thiadiazo1.2.yllure①
SHAOYu YANGPing LIShi.Rong@
WANGFa--Song HUW ei--Bing
(KeyLaboratoryofBiologicalResourcesProtectionandUtilizationofHubeiProvince,Schoolof
ChemicalandEnvironmentalEngineering,HubeiUniversityforNationalities,Enshi445000,China)
ABSTRACT 111etitlecompoundN-(2,6.difluorobenzoy1)-N-[5一(4一trifluoromethylpheny1)’1,3,4
thiadiazo1.2,y1]urea (C17H9F5N4O2S, =428.34)hasbeensynthesizedbythereactionof
2-amino.5一f4一trifluoromethylpheny1)一1,3,4一thiadiazolewith2,6一difluorobenzoylisocyanate,andits
crystalstructure wasdetermined by single—crystalX-ray diffraction.The crystalbelongsto
monoclinic,spacegroupP21/nwitha=10.7316(13),b=10.5617(13),c 16.037(2)A,
106.408(2)o, =1743.6(4)A3,z=4,D。=1.632g/cm3,=0.260mm-,‘F(O00) 864,thefinalR
=0.0599andwR=0.1420for3467observedreflectionswithI20(/).Theureagroup,which
adoptsaplanarconfigurationmediatedbytheintramolecularN_H…O hydrogenbond,isnearly
coplanarwiththethiadiazoleand4一trifluoromethylbenzenerings.Thetitlecompoundwasfoundto
exhibitgoodfungicidalactivityagainstRhizoctoniasolaniandBotrytiscinema.
Keywords:1,3,4.thiadiazole,aroylurea,synthesis,crystalstructure,biologicalactivity
1 INTRoDUCTIoN cides[ sectcides[161 and plant。growth regula—
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