25591-55-3Relevant academic research and scientific papers
Syntheses of diaza(hetera)2[1.1.1.1]paracyclophanes by Chapman rearrangement
Hasegawa, Ayako,Iwanaga, Tetsuo,Kaji, Natsuko,Kubota, Yukiko,Kumamoto, Fumiko,Morikawa, Akino,Obara, Tomoko,Sako, Katsuya,Takemura, Hiroyuki,Tanaka, Mari,Tatsumi, Akane
, (2020)
Diaza(hetera)2[1.1.1.1]paracyclophanes (PCPs) were prepared by the Chapman rearrangement. This is the first synthesis of highly strained and heteroatom-containing PCPs by a rearrangement reaction. The structures of the two precursors, [3.1.3.1]PCPs and [1.1.1.1]PCPs, are discussed in detail. In contrast to the small strain of [3.1.3.1]PCPs, [1.1.1.1]PCPs release their large strain by bending the aromatic rings and Carom.-X angles. Interestingly, Arom.-X-Arom. angles are smaller than those of the corresponding strain-free model compounds.
