On Thu, Apr 6, 2017 at 2:20 AM, Pierluigi Quagliotto <
pierluigi.quaglio...@unito.it> wrote:
> Dear All,
>
> I prepared a page for students (on my developing server:
> http://5.135.186.232/STdM/index.php/it/esercizi/
> esercitarsi-sulla-chiralita),
> in which they can:
>
> 1) write down an organic molecule in JSME
>
> 2) submit it to JSmol
>
> 3) attribute the Cahn-Ingold-Prelog priority to each group by selecting
> the first atom of each group which is attached to the Chiral Carbon and
> clicking on a button that create a label for that atom.
>
> 4) reorientate properly the molecule, in order to be able to assign the
> R / S configuration for chirality.
>
> This is enough for me to use in classroom just to show how one should
> proceed to work on exercises.
>
>
> My question is: Is there a way to obtain priority (by CIP rules) for
> each group attached to a Chiral Carbon? Is it possible to use some JSmol
> function(s) to obtain this information?
>
>
ho, ho! No, sorry. Can't do that. But I love the idea. In principal the
algorithm is not all that difficult.
https://www.chemcomp.com/journal/chiral.htm Maybe it's time to add that...
> If the answer is yes, this could help me to modify the page to give the
> student the chance to explore the correct result by viewing a model with
> correct priority labelling and also by clicking on a button which
> activate a function that perform the check.
>
>
> Sorry to bothering you...
>
>
> Bye!
>
>
> Pierluigi Quagliotto
>
>
>
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--
Robert M. Hanson
Larson-Anderson Professor of Chemistry
St. Olaf College
Northfield, MN
http://www.stolaf.edu/people/hansonr
If nature does not answer first what we want,
it is better to take what answer we get.
-- Josiah Willard Gibbs, Lecture XXX, Monday, February 5, 1900
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