On November 21, 2019, Mishra, Rituraj; Singh, Maninder; Singh, Hanuman; Haridas, V.; Kurur, Narayanan D. published an article.Application of 227940-70-7 The title of the article was Revealing Signs and Hidden 1H NMR Coupling Constants in Three-Spin Systems Using Long-Lived Coherences. And the article contained the following:
Long-lived coherences (LLCs) in a pair of coupled protons have long lifetimes and hence decreased line width and increased spectral resolution Fourier transformation of the damped oscillatory decay of the LLC also provides coupling information on the spin system. In a three-spin system, unlike in the two-spin case, the peaks in an LLC spectrum are observed at combinations of the coupling constants This attribute is used to determine the relative signs of the coupling constants in weakly and strongly coupled model systems. In addition, it is shown that a coupling constant in a three-spin system that is unobservable in the 1H NMR spectrum, as is the case in bispidinone, a mol. of significance in peptidomimetics, may be determined from the LLC spectrum. The experimental process involved the reaction of tert-Butyl 7-benzyl-9-oxo-3,7-diazabicyclo[3.3.1]nonane-3-carboxylate(cas: 227940-70-7).Application of 227940-70-7
The Article related to nmr three spin coupling constant long lived coherence, Biochemical Methods: Spectral and Related Methods and other aspects.Application of 227940-70-7
Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics