Synthesis and Chiroptical Properties of a Ring-Fused BODIPY with a Skewed Chiral π Skeleton

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• 作者：Yuki Gobo ; Masaki Yamamura ; Takashi Nakamura ; Tatsuya Nabeshima
• 刊名：Organic Letters
• 出版年：2016
• 出版时间：June 3, 2016
• 年：2016
• 卷：18
• 期：11
• 页码：2719-2721
• 全文大小：276K
• 年卷期：0
• ISSN：1523-7052

文摘

A twisted chiral boron–dipyrrin complex (BODIPY) was synthesized by oxidative annulation of the biphenyl units at the β positions. The chiral BODIPY has two asymmetric carbons in the large planar skeleton, which were generated upon the ring-fused reaction. Its π-elongated and twisted structure resulted in the Cotton effect in the red region (λ_max = 614 nm, Δε = 60 M^–1·cm^–1) as well as the strong fluorescence (Φ_F = 0.73) and circularly polarized luminescence (CPL).