Synthesis and Properties of anti/syn-Regioisomeric Mixtures of Alkyl-Substituted Tetracenes
作者:Chitoshi Kitamura、Hiroyuki Kano、Hideki Tsukuda、Takeshi Kawase、Takashi Kobayashi、Hiroyoshi Naito
DOI:10.3987/com-11-12191
日期:——
We prepared anti/syn-regioisomeric mixtures of alkyl-substituted tetracenes via Diels-Alder reaction between asymmetric furans and 2,6-naphthodiyne synthon. The solid-state color of the mixtures changed before and after recrystallization from Et2O, suggesting a difference in the molecular arrangements dependent on the different alkyl substituents as well as the change in the distribution of the anti/syn regioisomers after recrystallization. Slow evaporation of the recrystallized mixtures produced single crystals suitable for X-ray analysis, which revealed that the anti regioisomer was isolated.