BBr3-promoted cyclization to produce ladder-type conjugated polymer

Tetrahedron Letters

Volumn 47, Issue 49, 2006, Pages 8689-8692

  Kim, Inja ^a   Kim, Tae Hyun ^a   Kang, Youngjin ^b   Lim, Yong beom ^c  

^a SolarLight Ltd   (South Korea)

^b Kangwon National University   (South Korea)

^c Yonsei University   (South Korea)

Author keywords

[No Author keywords available]

Indexed keywords

BORON TRIBROMIDE; POLYMER;

ARTICLE; CHEMICAL STRUCTURE; CONJUGATION; CYCLIZATION; POLYMER PRODUCTION; PRECURSOR; SOLUBILITY;

EID: 33750472722     PISSN: 00404039     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.tetlet.2006.10.020     Document Type: Article

References (26)

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20. 1/c space group. Crystallographic data in CIF format for the structure reported here have been deposited at the Cambridge Crystallographic Data Centre (Deposition No. CCDC-617985). Copies of the data can be obtained, free of charge, on application to CCDC, 12 Union Road, Cambridge CB2 1EZ, UK [e-mail: deposit@ccdc.cam.ac.uk].
21. The crystal data, together with the refined atomic coordinates and anisotropic thermal parameters, for 1a and experimental procedures for the syntheses of all compounds are available in the Supplementary data.
22. max = 433 nm in dichloromethane. It should be also mentioned that a large Stokes shift was observed for 1a despite its rigid planar structure, and there are no rational explanations on this at the current state.
23. 4, respectively.
24. Synthesis of the compound 5 requires the conversion of the corresponding benzyl alcohol to the benzyl chloride as direct cross-coupling reaction using benzyl chloride gave the product in low yield (10%). See Supplementary data for details.
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