75990-00-0Relevant academic research and scientific papers
Activated Nitriles in Heterocyclic Syntheses, I. Novel Synthesis of Pyrrolones and 1,2,4-Triazol-3-oyl nitriles
Elmoghayar, Mohamed Rifaat Hamza,Ibrahim, Mohamed Kamal Ahmed,Ramiz, Mahmoud Mohamed Mahfouz,Elnagdi, Mohamed Hilmy
, p. 764 - 768 (2007/10/02)
The behaviour of 4-benzylidene-2-oxazolin-5-one (2) and of 4-phenylazo-2-oxazolin-5-one (3) toward a variety of active methylene reagents is reported.Cleavage of the oxazolin-5-one ring was observed in most cases.A variety of new, otherwise, difficult accessible, azolyl derivatives could be prepared. - Keywords: Heterocyclic Synthesis, Pyrrolones
Die Umsetzung von Azlactonen mit CH-aciden Verbindungen. 2. Mitteil. (1)
Stachel, Hans-Dietrich,Harigel, K. Klaus,Poschenrieder, Hermann,Burghard, Hans
, p. 1195 - 1199 (2007/10/02)
Alkyl cyanoacetate, malonate, acetoacetate and methylsulfonyl acetic acid ethyl ester are acylated by alkylidenazlactones.The acyl compounds easily form alkylidenetetramic acids by condensation.The acylcyanoacetates 2 isomerize into aminopyrrolines 3 via acid catalysis.
