Syntheses of fluoroalkyl and fluoroaryl titanates.

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概要

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• Tetrakis(1H,1H-perfluoroethyl) titanate, Ti(OCH<SUB>2</SUB>CF<SUB>3</SUB>)<SUB>4</SUB>, tetrakis(1H,1H-perfluoropropyl) titanate, Ti(OCH<SUB>2</SUB>CF<SUB>2</SUB>CF<SUB>3</SUB>)<SUB>4</SUB>, tetrakis(2,2,2-trifluoro-1-methylethyl) titanate, Ti[OCH(CH<SUB>3</SUB>)CF<SUB>3</SUB>]<SUB>4</SUB>, tetrakis(2,2,2-trifluoro-1,1-dimethylethyl) titanate, Ti[OC(CH<SUB>3</SUB>)<SUB>2</SUB>CF<SUB>3</SUB>]<SUB>4</SUB>, tetrakis((1H,1H,3H-perfluoropropyl) titanate, Ti(OCH<SUB>2</SUB>CF<SUB>2</SUB>CF<SUB>2</SUB>H)<SUB>4</SUB>, tetrakis(1H,1H,5H-perfluoropentyl) titanate, Ti[OCH<SUB>2</SUB>(CF<SUB>2</SUB>CF<SUB>2</SUB>)<SUB>2</SUB>H]<SUB>4</SUB>, tetrakis(1H,1H,7H-perfluoroheptyl) titanate, Ti[OCH<SUB>2</SUB>(CF<SUB>2</SUB>CF<SUB>2</SUB>)<SUB>3</SUB>H]<SUB>4</SUB>, and tetrakis(1H,1H,9H-perfluorononyl) titanate, Ti[OCH<SUB>2</SUB>(CF<SUB>2</SUB>CF<SUB>2</SUB>)<SUB>4</SUB>H]<SUB>4</SUB>, were prepared by the reaction of titanium tetrachloride with fluoro-substituted alcohols in the presence of ammonia. Tetrakis(pentafluorophenyl) titanate, Ti(OC<SUB>6</SUB>F<SUB>5</SUB>)<SUB>4</SUB> was synthesized by the ester interchange reaction of tetraisopropyl titanate with pentafluorophenyl acetate. These compounds were characterized on the basis of chemical analysis, IR, <SUP>1</SUP>H NMR, <SUP>13</SUP>C NMR and <SUP>19</SUP>F NMR spectra. Tetrakis(2,2,2-trifluoro-1,1-dimethylethyl) titanate was the monomeric in nitrobenzene, but tetrakis(1H,1H-perfluoroethyl) titanate and tetrakis(1H,1H-perfluoropropyl) titanate were associated in the same solvent, in which the highest association numbers observed were 3.5 and 1.5, respectively. These titanates were very sensitive to moisture and easy to decompose to give titanium oxide and alcohol or phenol.

• 公益社団法人 日本化学会の論文

著者

• Yoshino Norio

  Department Of Dental Radiology And Radiation Research Tokyo Medical And Dental University

• Tomita Junko

  Department of Cardiovascular Medicine,Kawasaki medical school

• Hirai Hidefumi

  Department Of Industrial Chemistry Faculty Of Engineering Science University Of Tokyo

• Tomita Junko

  Department of Industrial Chemistry, Faculty of Engineering, Science University of Tokyo

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