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Author: Subject: PHENYLPROPANOLAMINE isomers
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[*] posted on 30-11-2017 at 13:00
PHENYLPROPANOLAMINE isomers


Hello all, first post:

If one was to extract phenylpropanolamine from Pronin dog medication will this be of all isomers?
(D-Norephedrine, L-Norephedrine, D-Pseudonorephedrine,
L-Pseudonorephedrine).

Norephedrine is refluxed with potassium cyanate and water, then refluxed again with 2M HCL. This forms methylaminorex if I am not mistaken.

What isomer of Norephedrine will produce pure 4-mar?
And if both DL are present will this make racemic 4-mar?
If it is racemic is it like methamphetamine where it is essentially halved strength due to one isomer being practically inactive?
Or are both Norephedrine isomers active in the same manner?
Lastly if the Pseudonorephedrine isomers are present will this decrease yield or will it react in the same way to produce 4-methylaminorex.

Thanks in advance for advancing my purely educational knowledge.


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[*] posted on 30-11-2017 at 13:16


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