L-Ephedrine synthesis from L-phenylacetylcarbinol (L-PAC)

[rampage]

my first trial run of making l-pac, here is my recipe not sure if it's all correct but i'll give it a go anyway.

2.5 ltrs of h2o
87.50 gms of molasses
yeast and nutrient
20ml of benzaldehyde
75ml of ether

in to a 5ltr demijohn goes 2.5ltrs of h2o and 87.50 gms of molasses,
saturate wash with pure oxygen,
add yeast and nutrient and allow to ferment for 8hrs or so,
once wash is rapidly fermenting add 10ml of benzaldehyde ,
after 4hrs or so add another 10ml of benzaldehyde and allow to ferment for another 12hrs or more,
once finished remove yeast,
extract l-pac with 50ml of ether and then 25ml of ether,
combine ether and distill
collect l-pac?
theoretical yield 10ml is 50% conversion.

feedback is appreciated and i'll post my results once done.

 

[rampage]

sorry guys this evaluation was not correct, there is a need to incorporate sodium pyruvate and a yeast strain that can handle slightly acidic conditions, ph 5 - 5.5, and possibly a greating temperature range. its still a work in progress, albite very slow progress lol

 

[OrgUnikum]

l-PAC threads are always instantly overrun by bullshitters, so I say good-bye.

You got the most important information: Acetaldehyde or Pyruvate, a suited yeast and ph <5.

Nobody asked the big and obvious question: How can I find out if a strain of yeast is good or not?
And as nobody asked, there will be no answer but the mention that rather easy methods exist.
Happy searching don't PM me.

bye

 

[handle]

How can I find out if a strain of yeast is good or not?

 

[handle]

I think try this fresh live yeast.

 

[The-Hive]

Do several small batches see witch ones best

 

[Consider]

Please my super heros, please give us summary of the procedure , your mentorship is highly appreciated

 

[The-Hive]

Go the 4mmc to epher route there’s a video on it save time and money