1672-88-4Relevant articles and documents
Synthesis method of 1-((3-(5-nitro-2-furyl)allylidene)amino) hydantoin
-
Paragraph 0043; 0045; 0046; 0047; 0050; 0052; 0054, (2018/11/22)
The invention discloses a synthesis method of 1-((3-(5-nitro-2-furyl)allylidene)amino) hydantoin. The synthesis method is characterized by including: taking 5-nitrofuranacrolein and propyl aminohydantoin as main raw materials, allowing one-step condensation reaction to prepare a target compound crude product, and refining and purifying N, N-dimethylformamide to obtain 1-((3-(5-nitro-2-furyl)allylidene)amino) hydantoin, wherein a chemical reaction formula is shown as follows. Compared with reported methods, the synthesis method has the advantages that reaction path is short, process is simple and convenient, the raw materials are easy to get, generation of a pollution byproduct-aldehyde during synthesis is avoided, and the method is high in yield, low in cost, few in three wastes and environment-friendly, and reaction conversion rate reaches 98%.
POLYMORPHIC FORMS OF FURAZIDIN
-
Page/Page column 5, (2015/12/18)
The invention relates to the crystalline forms of Furazidin (1-{[(1E,2E)-3-(5-nitrofuran-2-yl)prop-2-ene-1-ylidene]amino}imidazolidin-2,4-dione) and methods of preparation thereof