Liu, Yue; Ma, Congcong; Leonen, Calvin J. A.; Chatterjee, Champak; Novakova, Gabriela; Marek, Ales; Turecek, Frantisek published an article in 2021. The article was titled 《Tackling a Curious Case: Generation of Charge-Tagged Guanosine Radicals by Gas-Phase Electron Transfer and Their Characterization by UV-vis Photo-dissociation Action Spectroscopy and Theory》, and you may find the article in Journal of the American Society for Mass Spectrometry.Synthetic Route of C11H24N2O2 The information in the text is summarized as follows:
We report the generation of gas-phase ribo-guanosine radicals that were tagged at ribose with a fixed-charge 6-(trimethylammonium)hexane-1-aminocarbonyl group. The radical generation relied on electron transfer from fluoranthene anion to noncovalent dibenzo-crown-ether dication complexes which formed nucleoside cation radicals upon one-electron reduction and crown-ether ligand loss. Rate constant measurements revealed an inverse isotope effect on the loss of either hydrogen or deuterium with rate constants kH = 0.25-0.26 s-1 and kD = 0.39-0.54 s-1. We used time-dependent d. functional theory calculations, including thermal vibronic effects, to predict the absorption spectra of several radical isomers. The calculated spectra of low-energy N-7-H guanine-radical tautomers closely matched the action spectra. Transition-state-theory calculations of the rate constants for the loss of H-7 and guanine agreed with the exptl. rate constants for a narrow range of ion effective temperatures Our calculations suggest that the observed inverse isotope effect does not arise from the isotope-dependent differences in the transition-state energies. Instead, it may be caused by the dynamics of post-transition-state complexes preceding the product separation In the experimental materials used by the author, we found N-Boc-1,6-Diaminohexane(cas: 51857-17-1Synthetic Route of C11H24N2O2)
N-Boc-1,6-Diaminohexane(cas: 51857-17-1) is a compound useful in organic synthesis used in the preparation of mixed self-assembled monolayers (SAMs) that resist adsorption of proteins using the reaction of amines with a SAM that presents interchain carboxylic anhydride groupsSynthetic Route of C11H24N2O2
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Ester – Wikipedia,
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