74149-24-9Relevant articles and documents
1-Arylideneamino-2,2,2-trichloroethanols as synthetic equivalents of arylideneimines in the reaction with cyclopropenone derivatives
Lozinskaya,Sosonyuk,Firsova,Proskurnina,Zefirov
experimental part, p. 1989 - 1994 (2012/09/22)
1-Arylideneamino-2,2,2-trichloroethanols react regiospecifically with cyclopropenones to form 2,2′-diaryl-1,1′,2,2′-tetrahydro- 3′,3′H-2,2′-bipyrrole-3,3′-diones. A new preparative method was developed for the synthesis of 1-arylideneamino-2,2,2- trichlor
Cycloaddition Reaction of Dimethyl Acetylenedicarboxylate with 2,4,5-Triphenyl-3H-pyrrol-3-one 1-Oxide
Freeman, Jeremiah P.,Haddadin, Makhluf J.
, p. 4898 - 4902 (2007/10/02)
The reaction of 2,4,5-triphenyl-3H-pyrrol-3-one 1-oxide with dimethyl acetylenedicarboxylate gave pyridine 9a, 4(3H)-pyridone 10a, isoxazolidine 11, and traces of pyridone 13.Pyridone 10a is not an intermediate in the formation of 9a, yet on photolysis or pyrolysis above its melting point, 10a yielded pyridine 9a.Possible reaction mechanisms that rationalize the formation of these products are discussed.
