ok lup
my guess
would be :
CH3-O-CH2CH2-O-CH2CH2-O-CO-CH(CH3)OH + H2O
then the OH with another milk sour molecule
so the oligomere would be A-MS-MS-MS-A...
the ending of the reaction would occure on the two alcohol parts (one on the oligomere the other on the A molecule), dropping one H2O in the process...
please tell me if i'm right eheh, it pissed me off not to be able to answer at first sight.
the A-MS-A-MS structure could occure maybe in some particular situation, but if u compare a COOH reactivity to an OH reactivity, COOH > OH (the C=O drawing all electrons from carbon atom).
Have fun (and crossing fingers i'm right)
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Re: for lupusceleri
Ty, you rock!Nozan wrote:ok lup
my guess
would be :
CH3-O-CH2CH2-O-CH2CH2-O-CO-CH(CH3)OH + H2O
then the OH with another milk sour molecule
so the oligomere would be A-MS-MS-MS-A...
the ending of the reaction would occure on the two alcohol parts (one on the oligomere the other on the A molecule), dropping one H2O in the process...
please tell me if i'm right eheh, it pissed me off not to be able to answer at first sight.
the A-MS-A-MS structure could occure maybe in some particular situation, but if u compare a COOH reactivity to an OH reactivity, COOH > OH (the C=O drawing all electrons from carbon atom).
Have fun (and crossing fingers i'm right)

I thought it'd be that way as well. And vickos.. this is chemicals, last year of highschool =) And nozan is chemicals teacher in France so... I kind of had to ask him for some explanation 8)
The C=O drawing all reactivity towards it sounds logical as well. I guess the oligomere gets longer if you put in more MS than A. (Simply less chance the partial oligomere meets an A and thus finishes off

Well, in three hours it's the hour of truth (final exam time for chemicals) so wish me luck!

EDIT: We would probably write it like this: CH3-O-CH2-CH2-O-CH2-CH2-O-(CO-CH(CH3)-O)n-CH2-CH2-O-CH2-CH2-O-CH3
Where the n is a whole number


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so how did it end lup ?
btw, sorry i could not be more online this week : got a f..... prorat-D trojan that installed in win/sys32 and well, it was pain to erase.
i'm just out of reinstalling winshit, the issue was i had to keep 40Go of datas alive so i could not format, had to repair, uninstall reinstall tons of progs.
add to that my isp went a bit nuts for a pair of days also.
but now all is ok and i'd even say the comp works better (did a lot of cleaning on it too eheh).
btw, sorry i could not be more online this week : got a f..... prorat-D trojan that installed in win/sys32 and well, it was pain to erase.
i'm just out of reinstalling winshit, the issue was i had to keep 40Go of datas alive so i could not format, had to repair, uninstall reinstall tons of progs.
add to that my isp went a bit nuts for a pair of days also.
but now all is ok and i'd even say the comp works better (did a lot of cleaning on it too eheh).
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Went good I think.. believe it or not but we got a question about a heap of... horseshitNozan wrote:so how did it end lup ?
btw, sorry i could not be more online this week : got a f..... prorat-D trojan that installed in win/sys32 and well, it was pain to erase.
i'm just out of reinstalling winshit, the issue was i had to keep 40Go of datas alive so i could not format, had to repair, uninstall reinstall tons of progs.
add to that my isp went a bit nuts for a pair of days also.
but now all is ok and i'd even say the comp works better (did a lot of cleaning on it too eheh).


Lupusceleri L220/24 Agent.
Silversmith upcoming TL5 twink.
Wolfseye L110/12 Adventurer (towertwink).
Lysdexic L90/9 Agent (Mimic Enf towertwink).
Aesculapias L21/2 Doctor (ancient).
Aaaand various other alts.
Silversmith upcoming TL5 twink.
Wolfseye L110/12 Adventurer (towertwink).
Lysdexic L90/9 Agent (Mimic Enf towertwink).
Aesculapias L21/2 Doctor (ancient).
Aaaand various other alts.