ACETO ACETIC ESTER. 5 



3 C 2 H 3 2 C 2 H 5 + 4 Na = 3 Na OC 2 H 5 + Na ( C 2 H 3 O ) 3 . The 

 author looks upon sod acetoacetic ester as a triacetyl derivative of sodium 

 and upon acetoacetic ester as a triacetyl derivative of hydrogen ; mak- 

 ing sodium and hydrogen trivalent. 



WISLICENUS, J., 1869 



Ann. Chem. 149, 205-215. 



/2-Oxy butyric Acid. 



The source of obtaining /9-oxybutyric 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 by the reaction to decom- 

 pose the substances into carbonates, acetone and alcohol. 



WANKLYN, A., 1869. 



Ber. 2, 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'"( C 2 H 4 )"]' 

 OH. This gives rise to a new set of compounds by replacing the hydro- 

 xyl hydrogen by 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 ethyl acetate of sodium, CH 2 

 ( C 2 H 5 ) CO 2 Na. This reacts with ethyl iodid thus : 2 CH 2 ( C 2 H 5 ) 

 C0 2 Na + 2 C 2 H 5 1 = 2 Na I + C 2 H 5 OH + C 6 H 8 ( C 2 H 5 ) 2 O 3 and 

 finally C 6 H 8 ( C 2 H s ) 2 O 3 reacts with sodethoxid to form CH 2 ( C 2 H 5 ) 

 CO 2 Na and butyric ester, C 6 H I2 O 2 . 



LADENBURG, 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 



