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Studies Directed at the Synthesis of Trialkoxysilyl Substituted NLO Chromophores
Kuhr, Ida J.

2000, Master of Science (MS), Wright State University, Chemistry.
Kuhr,Ida J. M.S.,Department of Chemistry,Wright State University,2000. Studies Directed at the Synthesis of Trialkoxysilyl Substituted NLO Chromophores. The synthesis of trialkoxyalkyl substituted NLO chromophores has been investigated. The chromophore 2-(7-(3-hydroxydiphenylamino)-9,9-diethyl-2-fluorenyl)-benzothiazole was prepared by a five step process. Bromination of fluorene yielded 2,7-dibromo-fluorene which could be converted to 2,7-dibromo-9,9-diethylfluorene by alkylation with ethyl iodide in DMSO.Reaction of 2,7-dibromo-9,9-diethylfluorene with one equivalent of butyl lithium followed by reaction with DMF provides 2-bromo-7-formyl-9,9-diethylfluorene. Condensation of 2-bromo-7-formyl-9,9-diethylfluorene and 2-aminobenzenethiol in DMSO results in the formation of 2-(7-bromo-9,9-diethyl-2-fluorenyl)benzothiazole. The conversion of 3-hydroxydiphenylamine to 3-benzyloxy-diphenylamine was accomplished with benzyl bromide and potassium carbonate in DMF. A palladium catalyzed coupling of 3-benzyloxydiphenylamine and 2-(7-bromo-9,9-diethyl-2-fluorenyl)benzothiazole provided 2-(7-(3-hydroxydiphenyl-amino)-9,9-diethyl-2-fluorenyl)benzothiazole. Several attempts to alkylate 2-(7-(3-hydroxydiphenylamino)-9,9-diethyl-2-fluorenyl)benzothiazole with trimethoxysilylmethyl chloride were made but the alkylation product could not be isolated and appeared to be unstable.
William Feld (Advisor)
67 p.

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Kuhr, I. (2000). Studies Directed at the Synthesis of Trialkoxysilyl Substituted NLO Chromophores. (Electronic Thesis or Dissertation). Retrieved from https://etd.ohiolink.edu/

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Kuhr, Ida. "Studies Directed at the Synthesis of Trialkoxysilyl Substituted NLO Chromophores." Electronic Thesis or Dissertation. Wright State University, 2000. OhioLINK Electronic Theses and Dissertations Center. 03 Aug 2015.

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Kuhr, Ida "Studies Directed at the Synthesis of Trialkoxysilyl Substituted NLO Chromophores." Electronic Thesis or Dissertation. Wright State University, 2000. https://etd.ohiolink.edu/

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