Organic Chemistry Hantzch Synthesis

[harrietstowe]

Homework Statement

http://img51.imageshack.us/img51/9563/chem3.png

Homework Equations

The Attempt at a Solution

I know the answer has to be a or c because you need the ammonia to make this reaction happen but I don't know whether you would want to use 3-oxobutanenitrile or butanoyl cyanide. Thanks

 

[sjb-2812]

Homework Statement

http://img51.imageshack.us/img51/9563/chem3.png

Homework Equations

The Attempt at a Solution

I know the answer has to be a or c because you need the ammonia to make this reaction happen but I don't know whether you would want to use 3-oxobutanenitrile or butanoyl cyanide. Thanks

Consider the mechanism at e.g. http://en.wikipedia.org/wiki/Hantzsch_pyridine_synthesis - can you label the various functional groups?