No abstract

Asymmetric amplification during self-replication is a key feature that is used to explain the origin of homochirality. Asymmetric autocatalysis of pyrimidyl alkanol in the asymmetric addition of diisopropylzinc to pyrimidine-5-carbaldehyde is a unique example of this phenomenon. Crystallization of zinc alkoxides of this 5-pyrimidyl alkanol and single-crystal X-ray diffraction analysis of the alkoxide crystals reveal the existence of tetramer or higher oligomer structures in this asymmetric autocatalytic system.

Liquid‐crystalline (LC)­ N‐heteroacenes, tetraazanaphthacene (TANC), and fluoflavin (FFV) were synthesized, and their self‐assembly into columnar LC structures at room temperature was investigated. LC TANC and LC FFV functioned as an electron acceptor and electron donor, respectively. A TANC/FFV LC mixture showed ESR activity in the presence of a strong base.