[Rdkit-discuss] Protonation site

2019-08-05 Thread Nitzan Tzanani
Dear rdkitters, I am trying to use rdkit descriptors to investigate protonation of molecules in the gas phase while testing my procedure on Ritalin, I try to calculate the protonation energy on different functional groups in the molecule although my understanding tells me protonation should occur

[Rdkit-discuss] Putting Recursive SMARTS in reactions

2017-12-06 Thread Nitzan Tzanani
Hello to all, I am trying to write a RDkit reaction, using Recursive SMARTS to better define the atoms participating in the reaction. For example, in this fragmentation reaction: rxn = AllChem.ReactionFromSmarts('[C:1][O:2][C:3]>>[C:1].[O:2]=[C:3]') I would like for [C:1] to define the carbon a

[Rdkit-discuss] Element in reaction

2017-10-03 Thread Nitzan Tzanani
Hello all, I am working on reactions in generalized form, such as rxn = AllChem.ReactionFromSmarts('[C:1]=[N,O,S:2]>>[C:1]-[*:2]') Is there an easy way to find out what were the elements in the reactant? Was the second atom an oxygen, nitrogen or sulfur? I hope someone can help me with this issu

[Rdkit-discuss] Redundant hydrogen atoms

2017-05-27 Thread Nitzan Tzanani
Hello, I am trying to formulate a reaction that describes a disconnection of a terminal methyl group from a sulfide while leaving two ions - [S+] and [CH3-]. Herein is my code: from rdkit import Chem from rdkit.Chem import AllChem from rdkit.Chem.Descriptors import * mo

[Rdkit-discuss] Redundant hydrogen atoms

2017-05-24 Thread Nitzan Tzanani
Hello, I am trying to formulate a reaction that describes a disconnection of a terminal methyl goup from a sulfide while leaving to ions - [S+] and [CH3-]. Herein is my code: from rdkit import Chem from rdkit.Chem import AllChem from rdkit.Chem.Descriptors import * mol =

[Rdkit-discuss] Putting together kekulization and reactions

2016-12-07 Thread Nitzan Tzanani
Hi, I am using rdkit to emulate fragmentation of molecules, and it is working great. While working with opening of aromatic rings, it seems to me that it would be simpler to work on the molecule after it was kekulized. My question is: how do I write a reaction on a kekulized molecule. For example