2G6 Prof. Latham, On the formation of lactic acid, [May 11, 



Three different conditions now present themselves ; (i) the 

 molecule CH 2 -I p M 2 may become detached, or (ii) the molecule 



rOH 



CH 2 



CN . NH or (iii) the larger molecule (CN . NH 2 may be 



CH 2 



iCN 

 separated from the chain. Let us consider the results in cases (i) 

 and (ii) taking the consideration of (iii) further on. In case (i) 

 we should have by hydration 



, OH ,OH 



C 2 H 4 C 2 H 4 



JCN.OH CN.NH 2 



CH 2 +H 2 = CH 2 



JCN . NH 2 l CN 



*CN + 0±1 * (COOH 



and so on, the remaining two molecules by hydration being con- 

 verted into CH 2 j~„ ^tt glycocine, C 2 H 4 j™ * alanine, and 



NH 3 , which last passes on to form another cyanamide in the 

 chain. 



If on the other hand the molecule CN . NH 2 is detached we 

 have 



and there is formed the next cyan-alcohol in the series 

 CH I .CH,{°H orCA |OH ] 



and cyanamide; the latter with water forming urea* 

 CN.NH 2 + H 2 = Co{™* 



Fownes' Chemistry, p. 406. 



