76875-19-9Relevant academic research and scientific papers
Substituted Bicyclic and Tricyclic Oxazolo-1,2,3-Triazole Systems: Ring Expansions to 1,3,4,5-Oxatriazines and Ring Contractions to 1,2,3-Triazaspiroalkane Derivatives
Butler, Richard N.,O'Shea, Donal F.
, p. 2797 - 2800 (2007/10/02)
Synthesis of a range of new bicyclic and tricyclic fused oxazolo-1,2,3-triazole systems is described.Treatment of these with acid caused transformations to substituted 1,3,4,5-oxatriazine and new 1,2,3-triazaspiroalkane systems which were isolated in high yields.Kinetic studies of the ring transformations indicated the presence of a delocalised carbocation intermediate and the mechanism of the ring expansion and contraction is discussed.
8?-Six-Atom Rings: 1,3,4,5-Oxa- and -Thia-triazines and 1,2,3,5-Tetrazines from an Extended Tandem Reaction: Reactions of 1,2,3-Triazolium-1-imides with (E)-Cinnamaldehyde, Methyl Cyanodithioformate, and Aryl-N-sulphinylamines: New Tetrahydro-oxazolo<4,5-
Butler, Richard N.,Evans, Ann M.,McNeela, Eithne M.,O'Halloran, Gerard A.,O'Shea, Paul D.,et al.
, p. 2527 - 2536 (2007/10/02)
The reactions of substituted 1,2,3-triazolium-1-imides with (E)-cinnamaldehyde, methyl cyanodithioformate, and aryl-N-sulphinylamines gave rise to substituted 1,3,4,5-oxatriazines, 1,3,4,5-thiatriazines, and 1,2,3,5-tetrazines, respectively.Each of these
Substituted 1,3,3a,4,5,6a-Hexahydro-oxazolo-1,2,3-triazoles from a Cycloaddition on a Carbonyl Group. Thermal Ring Expansion: A New Route to Substituted 1,3,4,5-Oxatriazenes
Butler, Richard N.,Evans, Ann M.,McArdle, Patrick,Cunningham, D.
, p. 1090 - 1091 (2007/10/02)
Substituted derivatives of hexahydro-oxazolo-1,2,3-triazoles, a new ring system, are described, and the crystal structure of one derivative is reported; on being heated they undergo a ring expansion providing a simple new route to the rare 1,3,4,5-
Photochemistry of Azole N-Oxides. III. Photoinduced Ring Expansion of 2H-1,2,3-triazole N-Oxides
Gainsford, Graeme J.,Woolhouse, Anthony D.
, p. 2447 - 2454 (2007/10/02)
Triaryl-4H-1,3,4,5-oxatriazines, the first members of the general class of oxatriazine heterocycles, have been isolated in high yields from the ultraviolet photolyses of the corresponding triaryl-2H-1,2,3-triazole N-oxides.Crystallographic peremeters on o
