作者:Kazusato Shibata、Abhijit A. Kulkarni、Douglas M. Ho、Robert A. Pascal
DOI:10.1021/jo00107a023
日期:1995.1
The synthesis of the polycyclic aromatic chlorocarbon perchlorotriphenylene (1, dodecachlorotriphenylene) from tetrachlorophthalic anhydride is described, and several approaches to the synthesis of 1 via Diels-Alder additions of 2,3,4,5-tetrachlorothiophene 1,1-dioxide and 5,5-dimethoxy-1,2,3,4-tetrachlorocyclopentadiene to naphthalene are also reported. The X-ray structure of compound 1 shows it to adopt a C-2 conformation which is highly distorted from planarity, but the compound is stable under ordinary conditions. Semiempirical and ab initio molecular orbital calculations indicate that the C-2 conformation is preferred to a D-3 conformation in the gas phase as well, and these calculations also indicate that compound 1 is highly flexible and can undergo rapid enantiomerization.