The three-dimensional configuration of the ester heterocycle is basically the same as that of the carbocycle. Compound: (S)-Propane-1,2-diamine dihydrochloride(SMILESS: C[C@H](N)CN.[H]Cl.[H]Cl,cas:19777-66-3) is researched.COA of Formula: C9H7NO2. The article 《Enantiomeric impurities in chiral catalysts, auxiliaries, synthons and resolving agents. Part 2》 in relation to this compound, is published in Tetrahedron: Asymmetry. Let’s take a look at the latest research on this compound (cas:19777-66-3).
The enantiomeric purity of reagents used in asym. synthesis is of fundamental importance when evaluating the selectivity of a reaction and the product purity. In this work, 109 chiral reagents (many recently introduced) are assayed. Approx. 64% of these reagents had moderate to high levels of enantiomeric impurities (i.e. from >0.1% to <16%). The type of chiral reagents assayed and used in enantioselective synthesis include metal-ligand catalysts for allylic substitutions, catalysts for addition of Grignard reagents and other additions, epoxidations and reduction of ketones and aldehydes; Ru-complex auxiliaries for asym. cyclopropanation, as well as amine, diamine, alc., diol, amino alc., carboxylic acid and oxazolidinone auxiliaries; epoxide, lactone, furanone, pyrrolidinone, nitrile, sulfoximine and carboxylic acid synthons (including malic acid, mandelic acid, lactic acid and tartaric acid); and a variety of chiral resolving agents. Accurate, efficient assays for all compounds are given. This literature about this compound(19777-66-3)Category: quinoxalinehas given us a lot of inspiration, and I hope that the research on this compound((S)-Propane-1,2-diamine dihydrochloride) can be further advanced. Maybe we can get more compounds in a similar way.
Reference:
Quinoxaline – Wikipedia,
Quinoxaline | C8H6N2 | ChemSpider