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Rhodium,
Thankyou for your time and detailed response,
I will try to answer everything,.
Firstly, about the celubrious written recourse of my wicked mind,
I get carried away most of the time,with my writing, but it's kinda like altering a Picasso to make it layman friendly, wouldn't ya think?
But yes, this is chemistry, not Art; I like to blur the transitions a bit, sorry,.
I purposly let the grammer flow like that, I like to fuk with english, as it intrigues me,.
It's just what I do, I love words,.I know there are spelling mistakes,(I am a busy man, and haven't got time to always proof read)
Believe it or not I am a writer by passion, and have many years as a typesetter and proof reader, I think this is just a misunderstanding; but as this is for clarity for the bees, it is perfectly understandable,.
I do type way to fast,around 80 wpm, and don't give a shit enough to care essentially what people think, whether it's an arrogance thing,.I just try to capture the moment, and not write to impress.
I don't need people to think that I'm good, I already know it, Damn this Higher conciousness!!!!,.
How would you feel Rhodium if you were born with an IQ of 142?- you see there I go again,-Just playing,.
But the grammer and sentance structure are purpose built,.Please believe me, Please?........
I realize you Euro dudes have a thing for English, and that is exceptionally satifisfying, it is no lie that you Euro freaks can speak and write better than most of us English background plebians,.
.
Did you know that eye am from Australia, I reckon I'sa dooin pererty sweet, but?
I like the way I write, and like to get responses, especially from you,.
I hope you enjoyed also the p-tosic post,. Please be kind there too, the grammer and structure is a work of art,.
I hope you don't think that i am offended too much, just a little, I don't take critizism very well, you should know this by now,.
Maybee you could make it up to me by forwarding a few more of my posts to your page,.-smile
To answer your question, from Vogels 3rd Edition(Whoops)
Once you have added all the Bromoacetamide solution, maintain the solution at 65-70c for an additional 10 minutes, or as long as it takes to get the solution clear, either or, really, in my experience,.But to be safe I found that even once the solution went clear and colourless, I would still hold it there for an additional 10 minutes,.
Then you heat to drive of the Gas,.
Where does the Ammonium Chloride come from??
Very good question, Mr Vogel isn't sure either, where does it come from?, he doesn't really say, except for his comment on top of page 247, where he says that the reaction mechanisms are not completely understood in reference to the Hoffman,.
He says and I Quote" The mechanism of the reaction probably involve the following stages:"
That one word "probably" is where it is formed, later he also mentions the word presumerably,.
It's not absolute I know, This hurts me as well, I thought we could be more definate.
You say it comes from the acetamide,. I think I understand what you are saying, as the reaction mechamism of the Acetamide forms also carbamic acid which decomposes into Nh2, consequently being one of the byproducts, but that is taken care of by evapouration, and why would Mr Vogel start the Methylamine reaction with impure Acetamide,?
But the impurity(AmmCl2) is like 20% of the product in the MeNh2 generation, so there is a lot there, like 20g, if you do it to the scale I do,.
I think it must come from one of the 3 steps of the Hoffman reaction,.
either the
a) the formation of the N-haloamide or
b) In the presence of alkali, hydrogen halide is eliminated producing "presumably" an electronically-deficient nitrogen fragment (an acryl 'nitrene') which reaarranges to the isocyanate, or
c) Hydrolysis of the isocyanate to the carbamic acid , which is unstable and decomposes to the primary amine and caron dioxide.
It's is an interesting point, I am not an educated enough chemist, to see exactly where this might happen, but I think if Vogel was stuck, then I would have to say, it's a job for someone with a more thorough understanding,.(hint)
In retrospect I have a hunch,.
If the carbamic acid decomposes to Nh3 and Co2 in the acetamide Prep
Ch3COOH + NH2CONH2 -----------> CH3CONH2 + NH2COOH (--->CO2 + NH2)
then in the hoffman, carbamic is produced as well, so I would assume the Nh2 is made in situ, thus giving us a Nh2 as the byproduct,.
Blow me down, could that be correct, just maybee this reacts in Situ with the Hcl, Just a guess,
Goddamn I impress myself,.
Cheers
Hellmanus
