Photochemical reaction between anthracene and carbon tetrachloride: Synthesis and isolation of 9-chIoro-10, lO'-Ws-(dichloromethyleno)-0,10'-dihydro-9,9'-bSanthryI (CDDB)

摘要

9-Chloro-10,10'-bis-(dichloromethyleno)-(9'H)-10,10'-dihydro-9,9'-bianthryl (CDDB) is the main bichromophoric photoproduct among the various such products obtained on photochemical reaction between anthracene and car-bontetrachloride. This is confirmed by various analyses e.g. C-H-N analysis, IR, NMR and mass spectroscopy to establish its structure. In this ground state the dihedral angle between Cl-C_9-C_9. and C_9-C_9.-H is approximately 60°.