Template Synthesis of Decaphyrin without <i>Meso</i>-Bridges: Cyclo[10]pyrrole
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An acenaphthylene-fused cyclo[10]pyrrole 1b was selectively synthesized via an oxidative coupling reaction of the corresponding 2,2′-bipyrrole with the appropriate dianion template, croconate anion. The structure of 1b as the isolated largest cyclo[n]pyrrole was elucidated by X-ray crystallographic analysis. The absorption spectrum exhibited a markedly red-shifted, intensified L band at 1982 nm, which was interpreted by application of Michl’s perimeter and Gouterman’s 4-orbital models, supported by magnetic circular dichroism (MCD) data and theoretical calculations.
创建时间：
2016-06-17
