1235339-76-0Relevant academic research and scientific papers
Bond Rotation in an Aromatic Carbaporphyrin: Allyliporphyrin
Hong, Jung-Ho,Aslam, Adil S.,Ko, Min-Sung,Choi, Jonghoon,Lee, Yunho,Cho, Dong-Gyu
, p. 10054 - 10058 (2018)
Allyliporphyrin is a carbaporphyrin that has replaced one pyrrole with an allyl group. Dynamic behavior (bond rotation) was observed by variable temperature 1H NMR and 2D-NOESY NMR spectroscopy and theoretically examined by DFT calculations. These studies revealed that well-defined bond rotation was first observed in the limited space of the carbaporphyrin from 2 through cis-2 and the calculated rotational barrier was low enough, with the relative energy level of cis-2 only 0.65 kcal mol?1 higher than 2. The synthesized allyliporphyrin (2) is a strongly aromatic macrocycle as indicated by the chemical shifts of its inner NH and CH signals. However, its palladium complex displayed reduced aromaticity due to the tilted thiophene of Pd-2.
Sulfur-assisted Propargyl-Allenyl isomerizations and electrocyclizations for the convenient and efficient synthesis of polyfunctionalized benzenes and naphthalenes
Zhou, Hongwei,Xing, Yanpeng,Yao, Jinzhong,Chen, Junhui
supporting information; experimental part, p. 3674 - 3677 (2010/10/20)
A facile and efficient electrocyclization for the synthesis of polyfunctionalized benzene and naphthalene derivatives was reported. As a result of the ready availability of starting materials and simple operation, this type of reaction has potential utility in organic synthesis.
