Several reactions in a row

Hey,





I've slight problems using MarvinSketch 5.1.5 while drawing a reaction mechanism.














When I add two edukts and add a reaction arrow a + is added between the products.. very nice :) .. when I would like to make the product of this reaction to react further it's not possible to add a new reaction arrow and I've to pick a normal arrow... and then adding the second product there is also a + sign between the first and second product...





Okay.. of couse I can avoid this when alsways using a normal arrow and adding the + myself.. but it is not possible to use then equilibrium arrows... would it be possible to fix this issue in the next version of MarvinSketch?





Furthermore it would be cool if a Group COOH could be added.. because when I do this via an Alias or something else the bond goes always to the middle of the COOH groups which looks... strange :)





Thanks in advance for such a great tool

Hello,





unfortunately, Marvin does not support multistep reactions. We are working on this issue, but I cannot tell, when will it be ready. As you've found out, you'll have to use the graphical arrows. All molecules before a reaction arrow are considered reactants (and have the + sign added between them) and the ones after the reaction arrow are products.





To add a COOH group to your molecule, the simplest way is to to type it. Point the cursor over an atom and type 'cooh'. The atom will be replaced by COOH, with the right connectivity (rotate the molecule, the bond will always point to the carbon). You can ungroup or expand this COOH which is an abbreviated group, by right-clicking over the group and choosing expand or ungroup. Description in Marvin's help: http://www.chemaxon.com/marvin/help/sketch/sketch-basic.html#howto-draw.sgroups





Regards,





Annamaria

Thanks for the hint with typing COOH, this makes it even faster and more correct :)





I'll look forward the feature with multistep reactions.. and I guess many more also ;-)