One of the major reasons for studying chemical kinetics is to use measurements of the macroscopic properties of a system, SDS of cas: 87392-05-0, such as the rate of change in the concentration of reactants or products with time.In a article, mentioned the application of 87392-05-0, Name is (R)-(+)-2-Tetrahydrofuroic acid, molecular formula is C5H8O3
Magnesium Tetraarylporphyrin Tweezer: A CD-Sensitive Host for Absolute Configurational Assignments of alpha-Chiral Carboxylic Acids
A protocol to determine the absolute configuration of alpha-chiral carboxylic acids based on a modified circular dichroic (CD) exciton chirality method has been developed. The protocol relies on a host-guest complexation mechanism: the chiral substrates are derivatized to give bifunctional amide conjugates (“guests”) that form complexes with a dimeric magnesium porphyrin host, Mg-T (T stands for “tweezer”) that acts as a “receptor”. The two porphyrins in the complex adopt a preferred helicity dictated by the substituents at the chiral center in accordance with their steric sizes (assigned on the basis of conformational energy A-values) and, consequently, with the absolute configuration of the substrates under investigation. This chiroptical method, verified with a variety of chiral substrates, has been demonstrated to be reliable and generally applicable, including natural products with complex structures. Molecular modeling, NMR, and FTIR experiments of selected host-guest complexes revealed the mode of ligation of the substrates to the magnesium porphyrin species and led to clarification of the structure of the complex. When oxygen functionalities were directly attached to the chiral center, the signs of the CD couplets were opposite to those predicted on the basis of steric size. NMR and molecular modeling experiments indicated that this apparent inconsistency was due to conformational characteristics of the guest molecules. The stereochemical analysis is shown to be a sensitive technique, not only for the determination of absolute configurations of substrates but also for elucidation of their solution conformations.
Sometimes chemists are able to propose two or more mechanisms that are consistent with the available data. SDS of cas: 87392-05-0, If a proposed mechanism predicts the wrong experimental rate law, however, the mechanism must be incorrect.Welcome to check out more blogs about 87392-05-0, in my other articles.
Reference£º
Tetrahydrofuran – Wikipedia,
Tetrahydrofuran | (CH2)3CH2O – PubChem