How to store chemical reactions

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#1 12 March, 2016 - 00:04
Joined: 1 year 11 months ago

How to store chemical reactions

Salt at all! I study pharmaceutical chemistry and on this site I have trovato many useful insights, the problem arises when I have to memorize synthesis and molecular mechanisms, if I take the image to the name of the compound do not know how to do to remind the molecule and then it is almost impossible to follow all the steps of synthesis, I'd like some advice, if there is you, I'll be eternally grateful!! I put a summary as easy as example schermata_2016-03-12_alle_08.28.08.png (57,3 KB) Thank you !!

21 March, 2016 - 18:38
Joined: 2 years 8 months ago

Do you have to remember the diagrams or just the words?

22 March, 2016 - 00:24
Joined: 1 year 11 months ago

Hi Josh! I Have to learn and remember the diagrams with sucesssivi steps, and their respective classifications . =(

23 March, 2016 - 17:10
Joined: 1 year 11 months ago

I have the same problem.

At this point I can tell you:
1) you need to really understand what you are looking (Vgr. your diagram is about different kinds of analgesics, each analgesic is based in the previous one, you already know something about organic chemistry)
2) look for another name (Vgr. IUPAC name of mepiridina: 4-Fenil-1-metil-piperidina-4-carboxilato de etilo [sorry, is in spanish]) or figure (Vgr. look on wikipedia )
3) you can make a story using the different segments of your compound:

There is a snake eating its tail [Bencene], who is driving a coche[COO-C-CH3]. This car is special because the seats have this strange form[Heterocicle]. And the radio is playing a song of Niche [N-CH3].

4) This only work if you really know what you are studying. This does not work if you have a test tomorrow or in five minutes.

I hope this will help you.

Good day :3

22 March, 2016 - 23:29
Joined: 1 year 11 months ago

Thanks Sirib ! Your explanation made ​​it clear to me some things .
Spanish is not a problem, I understand and speak . Compared to the required method , I would like to know , once created the story , and not to miss any step , according to your experience it is better to make the designs or just keep it in mind as a small movie , because it is precissamente in this that I find great difficulty .

23 March, 2016 - 17:38
Joined: 1 year 11 months ago

For me:
1) Is an important compound? You need to do both things: story and drawing the diagram (Practice, practice, practice)
2) Not important stuff (Vgr. a multiple choice test): just the story.

I hope this will help you

Good day

PD: este ejemplo ya se ha quedado almacenado en mi memoria de largo plazo.

23 March, 2016 - 21:55
Joined: 4 years 6 months ago

What are these hexagram-type diagrams called?

I guess I have seen them before, but never thought about them or how to interpret their meaning.

If I was trying to memorize them, though, I think my main strategy would be to turn them into numbers, then letters.

Each hexagon is like a clock. The vertices correspond to the even hours (i.e.: 12:00 [or 0:00], 02:00, 04:00, 06:00, 08:00 and 10:00). and the lines correspond to the odd hours (i.e.: 01:00, 03:00, 05:00, 07:00, 09:00 and 11:00). To simplify, I would think of the vertices as 0, 2, 4, 6, 8 & 10, and the lines as 1, 3, 5, 7, 9 & 11.

From what I see, a line normally starts at one vertex and ends at another vertex. Occasionally, a line could have no vertex at either its start or end point.

With this information, we could make some rules that allow us to make words out of this combination of lines and vertices.

If a line starts at a given vertex position, we could form a word for it as follows:
-The initial sound is a consonant representing the even number corresponding to that vertex position.
-A middle consonant is added representing the odd number corresponding to the line orientation.
-A final consonant sound is added corresponding to the vertex position where the line ends.

If a line is missing either a beginning or end vertex, that word will respectively begin or end with one of the letters h, w or y.

Whenever a full hexagonal ring is encountered, it will be represented by a word starting with a vowel. So, any word that starts with a vowel will be a full hexagon, and any word that starts with a consonant or h, w or y will represent a simple line.

One problem with my plan is that sometimes we would need to deal with the vertices and lines at positions 10 and 11. A special rule would be needed for those situations, and I haven't thought of what that rule should be. Also, there are some features of these diagrams I don't understand, so I am sure there will be a need for special rules to accomodate diagram elements that I don't get..

For example, on these diagrams, it looks like there are 3 different formats of completed hexagon rings. One with single lines only, then two variations that have extra interior lines. These might be handled by constraining each variation to start with a different set of vowels. Maybe a and e for single lines, i and o for one variety of double lines and u for the other.

Anyway, this is all just intended as a possible starting point for how one might begin building a memory system for these diagrams. Since I don't know the rules for how they are constructed, I am not sure how useful my idea is. If it is of any use, feel free to modify it to your needs.

Many thanks,


24 March, 2016 - 09:56
Joined: 4 years 6 months ago

An example might help to clarify my idea.

To get a feel for what I am talking about, we could look at a very small subsection of the link from Caleb's first post.

His image includes a hexagon-style diagram labeled ALOPERIDOLO (in red). At the left is the letter F, presumably standing for the element Fluorine, then a simple line corresponding to the 1 o'clock position of an imaginary hexagon. That line meets up with a full hexagon at its 10 o'clock vertex.

So far, we could represent this as the words:
-FLOOR (Fluorine)
-HoT-DiCe, to represent the little line, (initial H, W or Y to represent the fact that it's starting point does not connect to any other line or hexagon; T representing the number 1 for the 1 o'clock orientation of the line (could have use 7 as the 7 o'clock orientation is the same); DiCe to represent the 10 o'clock position of the vertex of the hexagon that it connects to.
-OPERA to represent the hexagon that it connects to. A full hexagon simply starts with a vowel.

Hopefully, this is enough of an example to give the flavor of my idea.



EDIT: Corrected a couple mistakes.

24 March, 2016 - 12:49
Joined: 1 year 11 months ago

I´m thinking about your strategy, Darn, and I need more time to practice using your rules.

In the meanwhile, there are two hexagonal structures in the example:
1) Benzene: the full hexagon. Its symetrical, so, you will only need to remeber some basic rules:
a) With only one compound joined to the benzene, it´s irrelevant in wich vertex is.
b) Two compounds covalent joined: orto, meta, para.

2) The other hexagonal figures are different kind of heterocyles (A nice summary here: click). And I think your rules can be applied here.

Thanks for the info!! It will help me a lot :3

25 March, 2016 - 03:39
Joined: 5 years 1 month ago

I've only loosely tinkered with these things, but I find visualizing against the wall using some "stock images" helps. For example, golf clubs sticking out at 12 or 2 o'clock (or whatever) has been useful when demonstrating how to memorize things like these.

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