OCCURRENCE OF A NEW PHENOL. 



51 



(b) A determination by the cryoscopic method using 

 benzene, resulted as follows: — 



0*4652 gram, in 10 grams, benzene lowered the 

 freezing point of the solvent 0*95° O. M.Wt.=246 



O14H20O4 requires 252. 



Under ordinary conditions the author has so far been 

 unable to prepare any derivatives of this interesting body, 

 neither a phenylurethane, benzoyl, or acetyl compound 

 resulting. No evidence was obtained of the presence of 

 methoxy or ethoxy groups. This phenol bears a very strong 

 resemblance to "Tasmanol," a similar phenolic body found 

 in some Eucalyptus Oils, and first described by Messrs. R. 

 Robinson, d.Sc, and H. G. Smith, f.c.s., in this Journal, 

 Vol. XL viii, page 518. The writer has had practical experi- 

 ence of this substance having separated it from the oil of 

 Eucalyptus Risdoni, and has also been unsuccessful in 

 obtaining solid derivatives, its behaviour being similar to 

 the phenol just described. 1 



The chief differences between the two phenols lie in the 

 refractive index, which in the case of Tasmanol is 1*524 to 

 1*528 at 20° C, and the boil ing point under reduced pressure, 

 which for the same body is 164 - 165° O. at 12 mm. Tasmanol 

 also contains fewer carbon atoms in the molecule, whilst 

 the different red colourations produced with ferric chloride 

 in alcoholic solution are quite distinct. I think, therefore, 

 on the evidence adduced that whilst the phenolic body 

 herein described is closely.related to Tasmanol, it possesses 

 distinctive characters of its own, and the name " Leptos- 

 permol " is proposed for it. 



I have once again to express my indebtedness to Mr. P. 

 Morrison, Assistant Ohemist, for able assistance in the 

 work. 



1 See Baker and Smith's " Research on the Euoalypts/' 2nd Edition, 

 page 396. 



