[ricecake]

Please help me with this problem.
2-Aminopropanoic + CH₃CHO  A + H₂/Ni/t°  B + t°/-CO₂ C + CH₃H₇Br (1:1)  D

I was really confused on A  I was thinking A would be an imine.
 
Would this be the correct answer for A: CH₃CH=NCHCH₃COOH
Thank you so much!

[Altered State]

You are right. Amine + aldehyde yields an imine:

[ricecake]

Thank you so much! I was confused because I was not sure if carboxylic OOH or primary amine has higher nucleophilicity. 

H₂/Ni/t° is a hydrogenation reaction in general so
B would be CH₃CH₂NHCHCH₃COOH

I was a bit iffy on C   CH₃CH₂NHCH₂CH₃

D  would be CH₃CH₂CH₃H₇

[ricecake]

+ (aldehyde)  + H₂,Ni,t°  -CO₂  + (1:1) 

[AromaticAcrobatic]

Ricecake,
be careful with that final product.
Where did 8 Carbons come from?

 

[ricecake]

+ (aldehyde)  + H₂,Ni,t°  -CO₂  + (1:1) 

My bad thank you for the correction and comments