265654-11-3Relevant academic research and scientific papers
A new synthetic route to tribenzo[a,e,i][12]annulenes
Meier, Herbert,Fetten, Michael
, p. 1535 - 1538 (2000)
The tribenzo[a,e,i][12]annulene 10 and the corresponding twofold annulene 14 were prepared on synthetic routes which first led from suitably functionalised starting compounds (2, 11) to the 1,2-distyryl- and 1,2,3,4- tetrastyrylbenzene derivatives 9 and 13 with two and four formyl groups, respectively. The cyclisation to 10 and 14 was achieved by applying the McMurry reaction. The extended ring system of compound 14 represents a discotic mesogen. The generation of liquid crystals was obtained with eight hexyloxy chains on the periphery. (C) 2000 Elsevier Science Ltd.
