Kim, Minsoo Jung, Hyunuk Aragonès, Albert C. Díez-Pérez, Ismael Ahn, Kwang-Hyun Chung, Wook-Jin Kim, Dahye Koo, Sangho Role of Ring <i>Ortho</i> Substituents on the Configuration of Carotenoid Polyene Chains The 9-(<i>Z</i>)-configuration was exclusively obtained in the carotenoid polyene chain irrespective of olefination and disconnection methods for terminal <i>ortho</i>-unsubstituted benzene rings. The 2,6-dimethyl substituents in the terminal rings secure an all-(<i>E</i>)-polyene structure. The single molecular conductance of the pure 9-(<i>Z</i>)-carotene was measured for the first time to be 1.53 × 10<sup>–4</sup> ± 6.37 × 10<sup>–5</sup>G<sub>0</sub>, whose value was 47% that of the all-(<i>E</i>)-carotene ((3.23 × 10<sup>–4</sup>) ± (1.23 × 10<sup>–4</sup>) G<sub>0</sub>). disconnection methods;dimethyl;G 0;unsubstituted benzene rings;carotene;terminal rings;terminal ortho;conductance;Carotenoid Polyene Chains;configuration;1.53;6.37;Configuration;carotenoid polyene chain;substituent;olefination;Ring Ortho Substituents;Role 2018-01-10
    https://acs.figshare.com/articles/journal_contribution/Role_of_Ring_i_Ortho_i_Substituents_on_the_Configuration_of_Carotenoid_Polyene_Chains/5773269
10.1021/acs.orglett.7b03930.s002