626235-18-5Relevant academic research and scientific papers
Synthesis of [8]Cycloparaphenylene-octacarboxylates via Rh-Catalyzed Stepwise Cross-Alkyne Cyclotrimerization
Hayase, Norihiko,Miyauchi, Yuta,Aida, Yukimasa,Sugiyama, Haruki,Uekusa, Hidehiro,Shibata, Yu,Tanaka, Ken
, p. 2993 - 2996 (2017)
The synthesis of C4- and C2-symmetrical [8]cycloparaphenylene (CPP)-octacarboxylates has been achieved via macrocyclization by the rhodium-catalyzed intermolecular stepwise cross-cyclotrimerization and subsequent reductive aromatization. The C4-symmetrical octa-tert-butyl [8]CPP-octacarboxylate forms a dimer in which eight ester moieties face each other. The dimers are aligned so as to make a one-dimensional column with a channel structure inside. Both absorption and fluorescence maxima of [8]CPP-octacarboxylates in CHCl3 were significantly blue-shifted compared to those of [8]CPP due to the presence of eight electron-withdrawing ester moieties.
Synthesis of differentially protected/functionalised acetylenic building blocks from p-benzoquinone and their use in the synthesis of new enediynes
Sankararaman, Sethuraman,Srinivasan, Manivannan
, p. 2388 - 2392 (2007/10/03)
The synthesis of differentially protected/functionalized acetylenic building blocks from p-benzoquinone and their use in the synthesis of new enediynes was discussed. The diastereoisomers were separated by using column chromatography and characterized by
