Synthesis and Chiroptical Properties of a Saddle-Shaped Quadruple Helicene with a Cyclooctatetrapyrrole Core

• DOI: 10.1021/acs.orglett.5c00294
• Publication Date: 2025-03-28T14:40:07Z
• Authors: Xu-Lang Chen; Si-Qian Yu; Zhao-Yi Cheng; Zi-You Zheng; An-Na Chen; Jinku Bai; Jia-Qi Liang; Chunyang Zheng; Xiaohuan Huang; Han-Yuan Gong
• Keywords: Helicene; Saddle

A quadruple helicene with a cyclooctatetrapyrrole core was synthesized via simple Ullmann reaction. Its single-crystal structure exhibits saddle shape. The compound shows fluorescence emission λem = 575 nm and good chiroptical properties, including dissymmetric absorption factor (|gabs|) of 5.84 × 10–3 (|glum|) 1.21 10–2.