[origination]

Can anyone show me the synthesis pathways for the formation of ethanamine (ethlyamine) from propene as starting material?  The attempted solution is as in the photo attached but I know that it is not the correct pathway. ==  I have increased the carbon atom by one...

[critzz]

Your pathway would result in two additional carbon atoms. The LiAlH4 nitril reduction doesn't remove a carbon atom, but will only reduce the tripple bond.
How about ozonolysis of the propene double bond as first step? 

[origination]

Your pathway would result in two additional carbon atoms. The LiAlH4 nitril reduction doesn't remove a carbon atom, but will only reduce the tripple bond.
How about ozonolysis of the propene double bond as first step?

Thanks for your suggestion but unfortunately it is not the most appropriate pathway. Can you think of the other possible ways to solve the problem? Thank you ~

[critzz]

This is what I had in mind.



You could swap the ozonolysis step for OsO₄, NaIO₄.

Honestly I do not know another way to reduce the carbon count and form ethylamine from propene. 

[Enthalpy]

What are the drawbacks of metathesis? Dangerous metal?

Now that propylene as a byproduct doesn't suffice for polypropylene any more, it's obtained from ethylene and butene anyway.

[Dan]

Honestly I do not know another way to reduce the carbon count and form ethylamine from propene. 

Lemieux–Johnson oxidation is an alternative to ozonolysis.

[critzz]

Lemieux–Johnson oxidation is an alternative to ozonolysis.

You could swap the ozonolysis step for OsO₄, NaIO₄.

Yeah, I didn't remember the name of the reaction though. ^^

[Dan]

Lemieux–Johnson oxidation is an alternative to ozonolysis.

You could swap the ozonolysis step for OsO₄, NaIO₄.

Yeah, I didn't remember the name of the reaction though. ^^

Sorry, I didn't read your post properly...