239092-65-0Relevant articles and documents
Synthesis, properties and fungicidal activity of 4-hydroxy(alkoxy)imino-oxazolidin-2-ones
Geffken,Riederer
, p. 265 - 270 (2001)
4-Hydroxyimino-oxazolodin-2-ones (3) were prepared by hydroxylaminolysis of 4-alkoxy-3-oxazolin-2-ones (2). Treatment of 3a with ethyl chloroformate in a molar ratio of 1:1 afforded 6, whereas the reaction 3a with two equivalents of ethyl chloroformate produced 4 and 5. By reacting 3a,d with diphosgene or thiophosgene the novel tetrahydro-oxazolo [4,3-c]1,2,4-oxadiazoles 7 could be obtained in low yields. From the prepared novel compounds only 3a displayed a remarkable fungicidal activity at 2 ppm.
Synthesis and fungicidal activity of 4-arylhydrazono-oxazolidin-2-ones
Geffken, Detlef,Groetschel-Wessendorf, Volkmar
, p. 21 - 25 (2007/10/03)
Cyclic carbonylation of the glycoloimidates 1 with 1,1'- carbonyldiimidazole (CDI) gives 4-ethoxy-3-oxazolin-2-ones (3), the arylhydrazinolysis of which affords 4-arylhydrazono-oxazolidin-2-ones (5). Although the novel compounds 5b-f displayed remarkable fungicidal activity in-vitro against selected phytopathogenic fungi, no significant activity could be established in the greenhouse.