期刊
JOURNAL OF ORGANIC CHEMISTRY
卷 69, 期 11, 页码 3842-3848出版社
AMER CHEMICAL SOC
DOI: 10.1021/jo0498213
关键词
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Thermal cyclization of 1-[2-(arylethynyl)phenyl]-3-trimethylsilylpropynones affords a mixture of benzo [b] fluorenones and benzo [c] fluorenones. The ratio of the two isomers can be efficiently varied between 100:0 and 0:100 by introducing substituents with appropriate electronic and steric properties on the aryl rings and using an appropriate solvent.
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