no BIBLIOGRAPHY OF 



at 719 m.m. pressure. An aqueous solution of this gives with barium 

 hydroxid C7 Hs O3 Ba a (xantho) barium salt, 



O— Ba-O 



I I 

 CH3 C CCH3 , 



II II 

 CH CH 



\ / 

 CO 



which, when treated with hydrochloric acid gives a tri-ketone 

 CH3 COCH2 COCH2 COCH3 , which melts at 49' and at higher 

 temperatures gives ofif water and forms dimethyl-pyrone again. 

 When the triketone is heated with ammonia, lutidone is formed. 



KRAFFT, F. AND J. MAI, 1889. 



Ber. 22, 1757-1759 ; J. Chem. Soc. 56, 1017. 

 Myristic Aldehyde. 



When myristic aldehyde, C13 H27 CHO, ammonia and acetoacetic ester 

 are mixed a reaction takes place and hydrotridecyl-lutidin-dicarboxylic 

 ester, 



^^13 -n.27 



I 

 C 



CO2 C, H5 CH CCO2 C, H5 , 



i I 



CH3CH C — CH3 



N 



is formed, which melts at 60.° From this were formed the corres- 

 ponding compounds ; — tridecyl-lutidin-di-carboxylic ester, tridecyl- 

 lutidin-di-carboxylic acid and tridecyl-lutidin. 



