Study on syntheses and structure of a new kind of bis-heterocyclic thiadiazine derivatives containing pyrazolone

A new kind of his-heterocyclic thiadiazine derivatives containing pyrazolone were synthesized and characterized. 2-Methylthio-5-(1,3-diphenyl-5-pyrazolone-4-ylidene)-5,6-dihydro-4H-1,3,4-thiadiazine (DPCP-MTTSC) (5) was determined by X-Ray crystallographical analysis.