503596-10-9Relevant academic research and scientific papers
Isolation of a cyclopropane-containing product from the rearrangement of a 3-aza-3-ene-1,5-diyne under acid catalysis
Feng, Liping,Kerwin, Sean M.
, p. 3463 - 3466 (2007/10/03)
A 3-aza-enediyne that undergoes rapid aza-Bergman rearrangement was treated with trifluoromethanesulfonic acid in the presence of 1,4-cyclohexadiene in an attempt to trap the putative 2,5-didehydropyridinium aza-Bergman intermediate. No pyridine products were detected; rather, a cyclopropane derivative of 1,4-cyclohexadiene derived from a 5-oxazolylcarbene was isolated.
An extremely facile aza-Bergman rearrangement of sterically unencumbered acyclic 3-aza-3-ene-1,5-diynes
Feng, Liping,Kumar, Dalip,Kerwin, Sean M.
, p. 2234 - 2242 (2007/10/03)
The factors that affect the kinetics of the aza-Bergman cyclization of aza-enediynes (C,N-dialkynyl imines) have not previously been elucidated. Here we report our kinetic studies of the aza-Bergman reactions of a series of 6-triisopropylsilyl and 6-unsub
