ethylenephenanthrene. Ozonolysis of the phenanthrene afforded 10-(2,2′-biphenylylene)-9-phenanthrone. This pinacolone was converted into 2′-(9-fluorenyl)biphenyl-2-carboxylic acid. Oxidation of 4,9′-bifluoren-9-one, which was obtained by ring closure of the acid, gave 9′-hydroxy-, 9′-benzyl-, and 9′-benzyloxy-4,9′-bifluoren-9-one. Isomers of 2,2′-diethyl-9,9′-bifluorene-9,9′-diol were obtained by reduction
9'-
甲基-9,9'-bifluoren-9-ol 的 Wagner-Meerwein 重排产生 10-(
2,2'-亚
苯基)-9-亚
甲基菲。
菲的
臭氧分解得到 10-(
2,2'-亚
联苯基)-9-
菲酮。该
频哪酮转化为2'-(9-
芴基)
联苯-2-
羧酸。通过酸闭环获得的 4,9'-bifluoren-9-one
氧化得到 9'-hydroxy-、9'-benzyl-和 9'-benzyloxy-4,9'-bifluoren-9 -一。
2,2'-diethyl-9,9'-bifluorene-9,9'-diol 的异构体是通过 2-ethyl-
9-芴酮的还原得到的。
频哪醇被重新排列为相应的
频哪醇,其被裂解为
羧酸。这些异构体的结构分配是通过光谱分析进行的。