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From a Cyclobutadiene Dianion to a Cyclobutadiene: Synthesis and Structural Characterization of Tetrasilyl‐Substituted Cyclobutadiene
Author(s) -
Sekiguchi Akira,
Tanaka Masanobu,
Matsuo Tsukasa,
Watanabe Hidetoshi
Publication year - 2001
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/1521-3773(20010504)40:9<1675::aid-anie16750>3.0.co;2-g
Subject(s) - cyclobutadiene , characterization (materials science) , chemistry , materials science , organic chemistry , nanotechnology , molecule
In less than one minute dianion 1 can be oxidized with 1,2‐dibromoethane to give pure tetrakis(trimethylsilyl)cyclobutadiene ( 2 , see scheme). The bridged cyclobutadiene derivative 6 was also similarly synthesized and characterized by X‐ray crystallography; it exhibits a planar rectangular structure with localized C=C bonds.