In the same way, by electrolysing a mixture of a metallic salt and an ester, other nuclei may be condensed; thus potassium acetate and potassium ethyl succinate yield CH 3 * CH2 ï¿½ CH2 ï¿½ C02 C2H5.
If a solution of potassium acetate be electrolysed the products are ethane, carbon dioxide, potash and hydrogen; in a similar manner, normal potassium succinate gives ethylene, carbon dioxide, potash and hydrogen; these reactions may be represented: CH 3 ï¿½CO 2;K CH 3 CO 2 K' CH 2 ï¿½CO 2 1K CH 2 CO 2 K' --> I + + I I -i iI + CH 3 ï¿½CO 21 K CH 3 CO 2 K' CH 2 ï¿½CO 2 iK CH 2 CO 2 K' By electrolysing a solution of potassium ethyl succinate, KO 2 Cï¿½(CH 2) 2 CO 2 C 2 H 5, the KO 2 Cï¿½ groups are split off and the two residues ï¿½(CH 2) 2 CO 2 C 2 H 5 combine to form the ester (CH2)4(C02C2H5)2.
Heated with sulphur it forms benzoic acid and stilbene: 2C 7 H 6 0+S = C6HS000H+C6H5CHS, 2C 6 H 5 CHS =2S +C14H12 Its addition compound with hydrocyanic acid gives mandelic acid C 6 H 5 CH(OH) COOH on hydrolysis; when heated with sodium succinate and acetic anhydride, phenyl-iso-crotonic acid C 6 H 5 CH: CH CH 2 000H is produced, which on boiling is converted into a-naphthol C 10 H 7 0H.
Y-Oxyacids are formed when aldehydes are heated with sodium succinate and sodium acetate.
Succinamide, C 2 H 4(CONH2)2, best obtained by the action of ammonia on diethyl succinate, crystallizes in needles which melt at 242243° C., and is soluble in hot water.
Wislicenus, Ann., 18 93, 2 75, p. 312), is also obtained by the action of sodium on the esters of pimelic acid; by the distillation of calcium succinate; and by hydrolysis of the cyclopentanone carboxylic acid, obtained by condensing adipic and oxalic esters in the presence of sodium ethylate.
Succinate of iron has been prepared by Hausmann.
It may be obtained in small quantity by passing ethylene or acetylene into boiling sulphur; by passing ethyl sulphide through a red-hot tube; by heating crotonic acid, butyric acid or erythrite with phosphorus pentasulphide; by heating succinic anhydride with phosphorus pentasulphide or sodium succinate with phosphorus trisulphide (J.