Friedel-Crafts Peralkylation of Benzene with -Chloroalkyltrichlorosilanes: One-Pot Synthesis of Polyfunctionalized Hexakis[
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- 作者：Kyung Mi Kim ; Jeong Hyun Kim ; Do Hyun Moon ; Myoung Soo Lah ; Il Nam Jung ; and Bok Ryul Yoo
- 刊名：Organometallics
- 出版年：2005
- 出版时间：January 17, 2005
- 年：2005
- 卷：24
- 期：2
- 页码：226 - 230
- 全文大小：94K
- 年卷期：v.24,no.2(January 17, 2005)
- ISSN：1520-6041
文摘
Hexakis[
-(trichlorosilyl)alkyl]benzenes 2 [alkyl = ethyl (a), propyl (b)] containing 18peripheral chlorine substituents on the six silicon atoms as functionalities were preparedin 72% and 53% yields by the one-pot reaction of benzene with a 6-fold excess of-chloroalkyltrichlorosilanes such as 2-chloroethyltrichlorosilane (1a) and 3-chloropropyltrichlorosilane (1b) in the presence of aluminum chloride, respectively. Single-crystal X-rayanalysis of compound 2b reveals that the 18 chlorine substituents on the six silicons aresymmetrically located on the outside. Compounds 2a,b reacted easily with methylmagnesiumbromide in diethyl ether at room temperature to give hexakis[-(trimethylsilyl)alkyl] in highisolated yields of 93 and 94%.
-(trichlorosilyl)alkyl]benzenes 2 [alkyl = ethyl (a), propyl (b)] containing 18peripheral chlorine substituents on the six silicon atoms as functionalities were preparedin 72% and 53% yields by the one-pot reaction of benzene with a 6-fold excess of-chloroalkyltrichlorosilanes such as 2-chloroethyltrichlorosilane (1a) and 3-chloropropyltrichlorosilane (1b) in the presence of aluminum chloride, respectively. Single-crystal X-rayanalysis of compound 2b reveals that the 18 chlorine substituents on the six silicons aresymmetrically located on the outside. Compounds 2a,b reacted easily with methylmagnesiumbromide in diethyl ether at room temperature to give hexakis[-(trimethylsilyl)alkyl] in highisolated yields of 93 and 94%.