OPTICALLY ACTIVE BIARYLS 1455 m.p. 139-141.5', infrared spectrum identical with that of startingmaterial, [ a ] * 6~ 0.0' ( G 1.1,i 2 , benzene). B.-Thermostated solutions ( 10jo) of (-)-I in redistilled o-xylene were examined polarimetrically (2-dm. tube) over a period of a t least one half-life. Readings were taken a t 435 m r and the results were plotted as log at ws. time. Excellent straight-line relationships resulted from the minimum of fifteen readings which were obtained for each run. The values of k obtained from the slopes of the curves are listed inTableI. Anal. Calcd. for ClsHls02: C, 81.17; H, 6.81. Found: C, 81.44; H, 6.94. The (+)-isomer ([a]*% -k 25' (C 0.99 chloroform)) Was obtained by decomposition of the salt ([aIp8D -68' (C 1.0, chf.)) which precipitated from (*)-I and W n i n e in acetone.The product was not further investigated.A.-A 1% solution of ( -1-
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