Abstract
Alkoxychlorosilanes are scientifically and industrially important toward preparing silicone and silica as well as preparation of siloxane-based nanomaterials by stepwise reactions of Si-OR (R=alkyl) and Si-Cl groups. Intermolecular exchange of alkoxy and chloro groups between alkoxysilanes and chlorosilanes (functional group exchange reaction) provides an efficient and environmentally benign route to alkoxychlorosilanes. BiCl3 as a Lewis acid catalyst can promote the functional group exchange reactions more efficiently than conventional acid catalysts. Higher reactivity has been observed for chlorosilanes with smaller numbers of Si-CH3 groups and for alkoxysilanes with larger numbers of Si-CH3 groups. The reaction mechanism is proposed and selective syntheses of alkoxychlorosilanes are demonstrated. These findings also enable us to synthesize an organotrialkoxysilane with four different substituents.
Original language | English |
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Journal | Chemistry - An Asian Journal |
DOIs | |
Publication status | Accepted/In press - 2016 |
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Keywords
- Alkoxysilane
- Chlorosilane
- Exchange reaction
- Lewis acid
- Selective synthesis
ASJC Scopus subject areas
- Chemistry(all)
Cite this
Selective Formation of Alkoxychlorosilanes and Organotrialkoxysilane with Four Different Substituents by Intermolecular Exchange Reaction. / Komata, Yuma; Yoshikawa, Masashi; Tamura, Yasuhiro; Wada, Hiroaki; Shimojima, Atsushi; Kuroda, Kazuyuki.
In: Chemistry - An Asian Journal, 2016.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Selective Formation of Alkoxychlorosilanes and Organotrialkoxysilane with Four Different Substituents by Intermolecular Exchange Reaction
AU - Komata, Yuma
AU - Yoshikawa, Masashi
AU - Tamura, Yasuhiro
AU - Wada, Hiroaki
AU - Shimojima, Atsushi
AU - Kuroda, Kazuyuki
PY - 2016
Y1 - 2016
N2 - Alkoxychlorosilanes are scientifically and industrially important toward preparing silicone and silica as well as preparation of siloxane-based nanomaterials by stepwise reactions of Si-OR (R=alkyl) and Si-Cl groups. Intermolecular exchange of alkoxy and chloro groups between alkoxysilanes and chlorosilanes (functional group exchange reaction) provides an efficient and environmentally benign route to alkoxychlorosilanes. BiCl3 as a Lewis acid catalyst can promote the functional group exchange reactions more efficiently than conventional acid catalysts. Higher reactivity has been observed for chlorosilanes with smaller numbers of Si-CH3 groups and for alkoxysilanes with larger numbers of Si-CH3 groups. The reaction mechanism is proposed and selective syntheses of alkoxychlorosilanes are demonstrated. These findings also enable us to synthesize an organotrialkoxysilane with four different substituents.
AB - Alkoxychlorosilanes are scientifically and industrially important toward preparing silicone and silica as well as preparation of siloxane-based nanomaterials by stepwise reactions of Si-OR (R=alkyl) and Si-Cl groups. Intermolecular exchange of alkoxy and chloro groups between alkoxysilanes and chlorosilanes (functional group exchange reaction) provides an efficient and environmentally benign route to alkoxychlorosilanes. BiCl3 as a Lewis acid catalyst can promote the functional group exchange reactions more efficiently than conventional acid catalysts. Higher reactivity has been observed for chlorosilanes with smaller numbers of Si-CH3 groups and for alkoxysilanes with larger numbers of Si-CH3 groups. The reaction mechanism is proposed and selective syntheses of alkoxychlorosilanes are demonstrated. These findings also enable us to synthesize an organotrialkoxysilane with four different substituents.
KW - Alkoxysilane
KW - Chlorosilane
KW - Exchange reaction
KW - Lewis acid
KW - Selective synthesis
UR - http://www.scopus.com/inward/record.url?scp=84992452912&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84992452912&partnerID=8YFLogxK
U2 - 10.1002/asia.201601120
DO - 10.1002/asia.201601120
M3 - Article
AN - SCOPUS:84992452912
JO - Chemistry - An Asian Journal
JF - Chemistry - An Asian Journal
SN - 1861-4728
ER -