Journal of the American Chemical Society

Some 1, 4-Diaryl-1, 3-cyclopentadienes

NL Drake, JR Adams

文献索引：Drake; Adams Journal of the American Chemical Society, 1939 , vol. 61, p. 1326,1328

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被引用次数: 37

摘要

Preparation and Resolution of Methylphenylacetic Acid.-dl-Methylphenylacetic acid was prepared in 78y0 yield by a malonic ester synthesis involving ethyl phenylmalonate and methyl iodide. Physical constants for the racemic acid are bp 124-125"(3-4 mm.), TZ~ D 1.5211, d204 1.097. Resolution of the acid was accomplished by three recrystallizations of the strychnine salt from 75% ethyl alcohol.'Deconlposition of the strychnine salt with ...