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^*

^*この研究の対応する著者

先進理工学部

研究成果 › 査読

12 被引用数 (Scopus)

抄録

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.

本文言語	English
ページ（範囲）	133-138
ページ数	6
ジャーナル	Journal of Sol-Gel Science and Technology
巻	22
号	1-2
DOI	https://doi.org/10.1023/A:1011280723772
出版ステータス	Published - 2001 9

ASJC Scopus subject areas

電子材料、光学材料、および磁性材料
セラミックおよび複合材料
化学 (全般)
生体材料
凝縮系物理学
材料化学

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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",

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number = "1-2",

}

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

VL - 22

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EP - 138

JO - Journal of Sol-Gel Science and Technology

JF - Journal of Sol-Gel Science and Technology

SN - 0928-0707

IS - 1-2

ER -

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

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