Author Topic: positioning? (Read 83 times)

Terror · « **on:** May 08, 2011, 02:06:01 AM »

Can anyone recommend any reading material about numeric positions for a non chemist?

Looking to understand activity levels, and why.

For example mdma runs a 3,4.. what does that mean and why? I have tried google but i think there's a name for it rather than 'numeric positioning'?

lugh · « **Reply #1 on:** May 08, 2011, 02:38:15 AM »

Perhaps your question will be answered by Nature 221 537-541 (1969) which was scanned for the former chief bee

Terror · « **Reply #2 on:** May 08, 2011, 10:38:33 AM »

Good article, and saved to the repository but a little advanced..?

Shake · « **Reply #3 on:** May 08, 2011, 10:52:34 AM »

i think the notation system have even changed, but there are really good u tube vids on the notation

but id say, if you count around the ring from the point the methamphetamine is attached, so count counter clockwise 1 2 3 4 at positions 3 and 4 you will find the methylene dioxy group, which is di oxy becasue there are 2 oxygens. both attatched to a methyl group

so 3 4 methylene dioxy - methamphetamine. now you know where the methamphetamine is because you can just count backwards from the 3 and 4 positions

lugh · « **Reply #4 on:** May 08, 2011, 01:38:56 PM »

As far as understanding IUPAC nomenclature, this web page is rather comprehensive:

h**p://www.acdlabs.com/iupac/nomenclature/

and there's an even more comprehensive e-book available:

h**p://ifile.it/79jlio/ebooksclub.org__Chemical_Nomenclature__Advances_in_Chemistry_Series_008_.l_44x31847zx3tx82.pdf

Terror · « **Reply #5 on:** May 09, 2011, 04:10:40 AM »

Thanks Lugh, Nomenclature was the word I was after - looks like quite a bit of reading in order but thanks for putting me onto the right lingo.

Author Topic: positioning? (Read 83 times)

Terror

positioning?

lugh

Re: positioning?

Terror

Re: positioning?

Shake

Re: positioning?

lugh

Re: positioning?

Terror

Re: positioning?