Journal ArticleDOI
Benzylation of 1‐Benzylidene‐3‐Pyrazolidinium Oxides
James E. Dowling,J.‐P. Anselme +1 more
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TLDR
The benzylation of 1-benzylidene-5-phenyl-3-pyrazolidinium oxide (2a) gives five products including the head-to-head dimer of 2 (7) and the ring-opened 1-(1)-cinnamoylbenzalhydrazone (4a) as discussed by the authors.Abstract:
The benzylation of 1-benzylidene-5-phenyl-3-pyrazolidinium oxide (2a) gives five products including the “head to head” dimer of 2 (7) and the ring-opened 1-benzyl-1-cinnamoylbenzalhydrazone (4a). Similar behavior was also observed with ylides bearing various substituents at the 4 and 5 positions.read more
Citations
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Cyclization and cycloaddition of 1-cinnamylidene-5-phenyl-3-oxopyrazolidinium ylide
TL;DR: In this article, a cycloaddition of 1-cinnamylidene-5-phenyl-3-oxopyrazolidinium ylide (1b) to the anticipated bicyclic [3.3.0] pyrazolidine is presented.
Journal ArticleDOI
Diphenylacetylene from the Base‐Catalyzed Fragmentation of 3,6‐Dihydro‐5,6‐Diphenyl‐3‐Tosyl‐1,3,4‐Oxadiazin‐2‐One
TL;DR: Treatment of 3,6-dihydro-5, 6-diphenyl-3-tosyl-1,3,4-oxadiazin-2-one with sodium hydride in THF affords diphenylacetylene in better than 70% yield as discussed by the authors.
Journal ArticleDOI
Benzylation of 1-Benzylidene-3-pyrazolidinium Oxides.
James E. Dowling,J.‐P. Anselme +1 more
TL;DR: The benzylation of 1-benzylidene-5-phenyl-3-pyrazolidinium oxide (2a) gives five products including the head-to-head dimer of 2 (7) and the ring-opened 1-(1)-cinnamoylbenzalhydrazone (4a) as mentioned in this paper.
References
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Journal ArticleDOI
The Reaction of Hydrazine with Cinnamic Acid Derivatives.
W. O. Godtfredsen,S. Vangedal +1 more
Journal ArticleDOI
Addition-addition-elimination mechanism of 1,3-dipole “dimerization”
Helmut Dorn,Thomas Kreher +1 more
TL;DR: In this paper, the three-step ADD-ADD-EL pathway to thermal "dimers" of pyrazolidin-3-one-azomethinimines without a center of symmetry is presented.
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