155259-27-1Relevant academic research and scientific papers
Synthesis of a trinuclear tropolone-palladium(II) macrocycle and its C60 inclusion properties
Otani, Hiroyuki,Sumi, Chisaki,Shimizu, Hideyuki,Hasegawa, Masashi,Iyoda, Masahiko
, p. 1710 - 1712 (2015/02/19)
4,5-Dialkyl-1,2-bis(5-tropolonylethynyl)benzenes 5a and 5b were synthesized, and dioctyl derivative 5a was converted into the corresponding trinuclear palladium(II) macrocycle 1a by react ing it w ith Pd(OAc)2. Macrocyclic supramolecular coordi
The Bergman reaction as a synthetic tool: Advantages and restrictions
Bowles, Daniel M,Palmer, Grant J,Landis, Chad A,Scott, John L,Anthony, John E
, p. 3753 - 3760 (2007/10/03)
The Bergman cycloaromatization reaction efficiently converts easily prepared acyclic enediynes into aromatic rings. In order to prepare larger, functionalized fused aromatic systems using this reaction, a thorough understanding of how functionalization affects cycloaromatization is necessary. We present here our studies on the influence of substituents at three different functionalization sites on cycloaromatization, and how these functional groups can be tailored to prepare more complex systems.
Synthesis of Diacetylene Macrocycles Derived from 1,2-Diethynylbenzene Derivatives: Structure and Reactivity of the Strained Cyclic Dimer
Zhou, Qin,Carroll, Patrick J.,Swager, Timothy M.
, p. 1294 - 1301 (2007/10/02)
Diacetylene macrocycles 2-4 (n=1-3) (R=H, C4H9, C6H13, C10H21, C12H25, OC10H21) have been prepared from the oxidative coupling of 1,2-diethynylbenzene derivatives.These compounds can be produced in useful quantities and are of interest as precursors to novel conjugated organic polymers.The reported results indicate that when the R groups are large the dimeric macrocycle (n=1) can be prepared in as high as 74percent yield from the corresponding 1,2-diethynylbenzene in a one-step procedure.An alternate multistep procedure was found to produce the tetrameric macrocycle (n=3,R=C6H13) in 45percent yield.The highly strained dimeric macrocycle was characterized by an X-ray structure and was found to be very reactive.The dimers undergo a rapid very exothermic polymerization at 100-125 deg C, indicative of a chain reaction.Reaction of the dimeric macrocycles with iodine results in intramolecular cyclization and a new 20? electron tetraiodide fused ring system.Reaction of the tetraiodide with oxygen produces a related compound in which two of the iodides have been converted to ketones.
