1962 年 26 巻 5 号 p. 329-333
4-Methyl-5-ethylfluorene and related compounds were synthesized starting from 5-methylfluorene-4-carboxylic acid. The carbonyls on 4-position in 5-metbyl-4-acetylfluorene and the corresponding fluorenone were found to be moderately hindered sterically.
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