APPENDIX 



293 



[E, p. 259.] By the action of nitrous 

 gas on styrene in ethereal solution 

 a ' pseudonitrosite ' is formed, which on 

 boiling with water is transformed into 

 /3-styrene nitrosite = a-nitroacetophen- 

 one-oxime. The latter, on boiling with 

 strong hydrochloric acid, yields (with 

 henzoic acid) benzonitrile (Wieland, 

 Ber. 36, 3558 : see also Sommer, Ber. 

 29, 356). ' 



170. Plieiiylethyl Isothiocyaiiate 

 (p. 360). 



To be added to synthetical pro- 

 cesses : 



[A, p. 260.] Or benzyl magnesium 

 bromide (from benzyl bromide and 

 magnesium) interacts in ethereal solu- 

 tion with formic ester [Vol. II] to 

 form phenylacetic = a-toluic aldehyde 

 (Gattermann and Maffezzoli, Ber. 36, 



4I53)- 



172. Hydrogen Cyanide (p. 262). 



The presence of hydrogen cyanide in 

 sorghum has been confirmed and the 

 quantity estimated by Slade (Journ. 

 Am. Ch. Soc. 25, 55). Experiments 

 on the formation and determinations of 

 the quantity of hydrogen cyanide in 

 sorghum and other fodder-plants have 



been undertaken by the Queensland 

 Department of Agriculture at the Bris- 

 bane Botanic Garden, and are described 

 in the paper referred to on p. 263 

 (Briinnich, Trans. Ch. Soc. 83, 788). 

 A cyanogenetic glucoside, gynocardin, 

 has been obtained from the seeds of 

 Gynocardia odorata (Power and Gornall, 

 Proc. Ch. Soc. 20, 137). 



To be added to synthetical pro- 

 cesses : 



[A, p. 263.] Hydrogen cyanide is 

 formed by passing electric sparks 

 through a mixture of hydrogen, nitro- 

 gen, and carbon monoxide (Gruszkie- 

 wicz, Zeit. Elektroch. 9, 83). Further 

 experiments on the production of 

 cyanides from nitrogen in presence of 

 strongly heated carbon and alkaline 

 carbonates, hydroxides, iron, &c., have 

 been carried out by Tauber (Ch. Ind. 

 26, 26; Ch. Centr. 1903, 1, 434). 



[HH, p. 268.] From lenzoic and acetic 

 acids [Vol. II] through acetophenone 

 and its nitroso- (isonitroso-) derivative 

 (see under benzoic aldehyde [114 ; G-, 

 p. 210]). The sodium compound of 

 isonitrosoacetophenone on heating, 

 or by the action of strong acid or 

 excess of aqueous alkali, is resolved 

 into benzoic acid and hydrogen cyanide 

 (Claisen and Manasse, Ber. 20, 2194 ; 

 Sluiter, Proc. Akad. Wetensch. Am- 

 sterdam, Jan. 30, 1904). 



