Syntheses and NMR study of [(2-dimethylaminomethyl)phenyl]vinylsilane derivatives and [(2-dimethylaminomethyl)phenyl]ethylsilane derivatives期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

Syntheses and NMR study of [(2-dimethylaminomethyl)phenyl]vinylsilane derivatives and [(2-dimethylaminomethyl)phenyl]ethylsilane derivatives

Authors:	Hyeon Mo Cho Chang Hwan Kim Myong Euy Lee

Affiliation:	^a Department of Chemistry, Graduate School, Yonsei University, Seoul 120-749, South Korea ^b Korea Research Institute of Chemical Technology, P.O. Box 107, Yusung, Daejun 305-606, South Korea

Abstract:	Various vinylsilanes, SiX(CHCH₂)(CH₃)[2-(CH₃)₂NCH₂C₆H₄], and ethylsilanes, SiX(CH₂CH₃)(CH₃)[2-(CH₃)₂NCH₂C₆H₄] [X=Cl (1); OMe (2); H (3); F (4); OSiMe₃ (5); NMe₂ (6); Me (7)], were synthesized in order to investigate the electronic effect of vinyl group on silicon atom having an intramolecular coordination arm. The magnitude of Δδ (ethyl→vinyl for ²⁹Si-NMR) of chlorosilane, 1, was the biggest one among 1-7. The differences of ²⁹Si chemical shifts between vinylsilanes and ethylsilanes increased in the following order: X=Me, NMe₂3

Keywords:	Vinylsilane Ethylsilane ²⁹Si-NMR Donor atom
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