Control of hydrolysis and condensation reactions of titanium tert-butoxide by chemical modification with catechol

Hideyasu Honda; Kentaro Suzaki; Yoshiyuki Sugahara

doi:10.1023/A:1011280723772

Control of hydrolysis and condensation reactions of titanium tert-butoxide by chemical modification with catechol

Hideyasu Honda, Kentaro Suzaki, Yoshiyuki Sugahara^*

^*Corresponding author for this work

School of Advanced Science and Engineering

Research output: Contribution to journal › Article › peer-review

15 Citations (Scopus)

Abstract

Titanium tert-butoxide (Ti(OC(CH₃)₃)₄; Ti(O^tBu)₄) was chemically modified with catechol (C₆H₄(OH)₂) and hydrolysis and condensation behavior of a resultant modified alkoxide was studied. Spectroscopic results revealed that the reaction between titanium tert-butoxide and catechol resulted in the formation of catecholate groups (C₆H₄O₂^2-) bound to titanium and corresponding release of tert-butanol. The mass spectrometry and cryoscopy indicated that main species was a dimer [(C₆H₄O₂)₂Ti₂ (O^tBu)₄]. The hydrolysis of the modified alkoxide in the system with Ti:tetrahydrofuran (THF):H₂O = 1:10:x (x = 0.5-10) resulted in the partial hydrolysis, and all the hydrolyzed products after the drying under reduced pressure were soluble in THF and chloroform.

Original language	English
Pages (from-to)	133-138
Number of pages	6
Journal	Journal of Sol-Gel Science and Technology
Volume	22
Issue number	1-2
DOIs	https://doi.org/10.1023/A:1011280723772
Publication status	Published - 2001 Sept

Keywords

Catechol
Chemical modification
Hydrolysis
Titanium tert-butoxide

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Ceramics and Composites
Chemistry(all)
Biomaterials
Condensed Matter Physics
Materials Chemistry

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title = "Control of hydrolysis and condensation reactions of titanium tert-butoxide by chemical modification with catechol",

abstract = "Titanium tert-butoxide (Ti(OC(CH3)3)4; Ti(OtBu)4) was chemically modified with catechol (C6H4(OH)2) and hydrolysis and condensation behavior of a resultant modified alkoxide was studied. Spectroscopic results revealed that the reaction between titanium tert-butoxide and catechol resulted in the formation of catecholate groups (C6H4O22-) bound to titanium and corresponding release of tert-butanol. The mass spectrometry and cryoscopy indicated that main species was a dimer [(C6H4O2)2Ti2 (OtBu)4]. The hydrolysis of the modified alkoxide in the system with Ti:tetrahydrofuran (THF):H2O = 1:10:x (x = 0.5-10) resulted in the partial hydrolysis, and all the hydrolyzed products after the drying under reduced pressure were soluble in THF and chloroform.",

keywords = "Catechol, Chemical modification, Hydrolysis, Titanium tert-butoxide",

author = "Hideyasu Honda and Kentaro Suzaki and Yoshiyuki Sugahara",

note = "Funding Information: The authors gratefully thank Prof. Kazuyuki Kuroda, Department of Applied Chemistry, Waseda University, for valuable discussion. This work is partly supported by Waseda University as a special project (99A-189).",

year = "2001",

month = sep,

doi = "10.1023/A:1011280723772",

language = "English",

volume = "22",

pages = "133--138",

journal = "Journal of Sol-Gel Science and Technology",

issn = "0928-0707",

publisher = "Springer Netherlands",

number = "1-2",

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TY - JOUR

T1 - Control of hydrolysis and condensation reactions of titanium tert-butoxide by chemical modification with catechol

AU - Honda, Hideyasu

AU - Suzaki, Kentaro

AU - Sugahara, Yoshiyuki

N1 - Funding Information: The authors gratefully thank Prof. Kazuyuki Kuroda, Department of Applied Chemistry, Waseda University, for valuable discussion. This work is partly supported by Waseda University as a special project (99A-189).

PY - 2001/9

Y1 - 2001/9

N2 - Titanium tert-butoxide (Ti(OC(CH3)3)4; Ti(OtBu)4) was chemically modified with catechol (C6H4(OH)2) and hydrolysis and condensation behavior of a resultant modified alkoxide was studied. Spectroscopic results revealed that the reaction between titanium tert-butoxide and catechol resulted in the formation of catecholate groups (C6H4O22-) bound to titanium and corresponding release of tert-butanol. The mass spectrometry and cryoscopy indicated that main species was a dimer [(C6H4O2)2Ti2 (OtBu)4]. The hydrolysis of the modified alkoxide in the system with Ti:tetrahydrofuran (THF):H2O = 1:10:x (x = 0.5-10) resulted in the partial hydrolysis, and all the hydrolyzed products after the drying under reduced pressure were soluble in THF and chloroform.

AB - Titanium tert-butoxide (Ti(OC(CH3)3)4; Ti(OtBu)4) was chemically modified with catechol (C6H4(OH)2) and hydrolysis and condensation behavior of a resultant modified alkoxide was studied. Spectroscopic results revealed that the reaction between titanium tert-butoxide and catechol resulted in the formation of catecholate groups (C6H4O22-) bound to titanium and corresponding release of tert-butanol. The mass spectrometry and cryoscopy indicated that main species was a dimer [(C6H4O2)2Ti2 (OtBu)4]. The hydrolysis of the modified alkoxide in the system with Ti:tetrahydrofuran (THF):H2O = 1:10:x (x = 0.5-10) resulted in the partial hydrolysis, and all the hydrolyzed products after the drying under reduced pressure were soluble in THF and chloroform.

KW - Catechol

KW - Chemical modification

KW - Hydrolysis

KW - Titanium tert-butoxide

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DO - 10.1023/A:1011280723772

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AN - SCOPUS:0035443267

SN - 0928-0707

VL - 22

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EP - 138

JO - Journal of Sol-Gel Science and Technology

JF - Journal of Sol-Gel Science and Technology

IS - 1-2

ER -

Control of hydrolysis and condensation reactions of titanium tert-butoxide by chemical modification with catechol

Abstract

Keywords

ASJC Scopus subject areas

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