ACETO ACETIC ESTER. 5 



3 C, H3 O, C3 H5 + 4 Na = 3 Na OC3 H, + Na ( C, H3 O )3. The 

 author looks upon sod acetoacetic ester as a triacet}-! derivative of sodium 

 and upon acetoacetic ester as a triacet}-! derivative of hydrogen ; mak- 

 ing sodium and h^'drogen trivalent. 



WISLICENU5, J., 1869 



Ann. Chem. 149, 205-215. 



^5^=0xy butyric Acid, 



The source of obtaining /^-ox^-buti'ric acid is acetoacetic ester which 

 is treated with sodium amalgam and must be kept cool during the re- 

 action for other- wise enough heat is generated b}' the reaction to decom- 

 pose the substances into carbonates, acetone and alcohol. 



WANKLYN, A., 1869. 



Ber. 3, 64-65 ; Ann. Chem. 150, 206-208. 

 Action of Sodium on Alcohol. 



By the action of sodium on alcohol, sodethoxid was formed, from 

 which the author concludes that sodium is trivalent [Na"'( C2 H4 )"]' 

 OH. Tliis gives ri.se to a new .set of compounds by replacing the hydro- 



xvl hvdrogen bv radicals. 



WANKLYN, A., 1869. 



Ber. 2, 425-427. 



Product of the action of Sodium and then Ethyl lodid on 



Acetoacetic Ester. 



No hydrogen is evolved in the first part of this reaction, the chief 

 products of which are sodethoxid and sodacetoacetic ester. Then .sod- 

 ethoxid reacts with acetic ester to form eth}^ acetate of sodium, CH2 

 ( C2 H, ) CO2 Na. This reacts with ethyl iodid thus : 2 CH^ ( C^ H5 ) 

 CO2 Na -f- 2 C2 H, 1 = 2 Na I + C\ H5 OH -f Cg Hg ( C^ H5 )^ O3 and 

 finally Ce Hs ( C2 H, )2 O. reacts with .sodethoxid to form CH^ ( C^ H5 ) 

 CO2 Na and butyric e.ster, Ce H12 O,. 



LADENBURQ, A., 1870. 



Ber. 3. 305-306. 

 Action of Sodium on Acetic Ester. 



By experimenting on this reaction the author concludes that no hydro- 

 gen is given off, and that with perfectly dry acetic ester no action will 

 take place below 100° 



