Asymmetric Synthesis
Organic synthesis, Chirality (chemistry), Chiral pool synthesis
978-613-7-14759-7
6137147592
72
2012-05-20
29,00 €
eng
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Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Asymmetric synthesis, also called chiral synthesis, enantioselective synthesis or stereoselective synthesis, is organic synthesis that introduces one or more new and desired elements of chirality. This is important in the field of pharmaceuticals because the different enantiomers or diastereomers of a molecule often have different biological activity. Chirality must be introduced to the substance first. Then, it must be maintained. Care needs to be taken when planning the synthesis: The chirality might be removed by a chemical change that makes the substance isotropic. This process is called epimerization. For example, a SN1 substitution reaction converts a molecule that is chiral by merit of non-planarity into a planar molecule, which has no handedness. (To visualise, draw the outlines of both of your hands on paper, and cut the images out. You can now superimpose the images, even if the hands themselves do not superimpose.)
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