19036-27-2Relevant articles and documents
A new protocol for the synthesis of 4,7,12,15-tetrachloro[2.2]paracyclophane
Pan, Donghui,Wang, Yanbin,Xiao, Guomin
, p. 2443 - 2449 (2016/12/07)
We report a green and convenient protocol to prepare 4,7,12,15-tetrachloro[2.2]paracyclophane, the precursor of parylene D, from 2,5-dichloro-p-xylene. In the first bromination step, with H2O2-HBr as a bromide source, this procedure becomes organic-waste-free and organic-solvent-free and can appropriately replace the existing bromination methods. The Winberg elimination-dimerization step, using aqueous sodium hydroxide solution instead of silver oxide for anion exchange, results in a significant improvement in product yield. Furthermore, four substituted [2.2]paracyclophanes were also prepared in this convenient way.
Synthesis and complete NMR spectral assignment of thiophene-substituted sulfinyl monomers
Henckens, Anja,Adriaensens, Peter,Gelan, Jan,Lutsen, Laurence,Vanderzande, Dirk
, p. 931 - 937 (2007/10/03)
This paper describes the synthesis of thiophene-substituted sulfinyl monomers. It comprises a four-step reaction by which the thiophene unit is built in via Suzuki coupling. These monomers could be used as building blocks for the preparation of conducting
Thia-and/or selenafulvalenyl group-containing compound
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, (2008/06/13)
A thia- and/or selenafulvalenyl group-containing compound of the formula (I), STR1 wherein each of X1, X2, X3, X4, X'1, X'2, X'3 and X'4 is independently S or Se, Y is an electron donating or electron accepting group having a size which is not so large as to prevent molecular overlapping, m is an integer of 0 to 4, each of Z1, Z2, Z'1 and Z'2 is independently a hydrogen atom, Cn H2n+1 in which n is an integer of 1 to 5, or alternatively, a combination of Z1 with Z2 and Z'1 with Z'2 is Cn H2n in which n is an integer of 1 to 5, or X(Cn H2n)n', X in which X is S or Se and n' is an integer of 1 to 3, and each of R1, R2, R3, R'1, R'2 and R'3 is independently a hydrogen atom or Cn H2n+1 in which n is an integer of 1 to 5. The compound has an electron donating nature and can be used to make electrically conductive complexes. The compound has an excellent thermal stability.