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- W2002172754 abstract "In this study, the competing benzyl cation transfer reactions have been explored by investigating the gas phase chemistry of the protonated benzyl phenylalaninates. Protonation at the carboxylic O atom results in the breakage of the ester CO bond to afford the benzyl cation, which undergoes the competing migration to the amino N atom or the phenyl ring C atom. Both the amino and the phenyl ring hydrogen atoms can be activated to be mobile due to the electrophilic attack of the transferring benzyl cation, and migration of the activated hydrogen atom to the carboxylic hydroxyl leads to (H2O + CO) elimination of the precursor ion. Interestingly, it is much more preferred for the benzyl cation to transfer to the phenyl ring via the amino N, leading to the stepwise benzyl cation transfer, albeit the amino N atom contains more nucleophilic affinity. The mechanistic processes have been confirmed by the MS3 spectra data, along with D-labeling experiments and theoretical calculations." @default.
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- W2002172754 date "2014-08-01" @default.
- W2002172754 modified "2023-10-18" @default.
- W2002172754 title "Competing benzyl cation transfers in the gas-phase fragmentation of the protonated benzyl phenylalaninates" @default.
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- W2002172754 doi "https://doi.org/10.1016/j.ijms.2014.05.011" @default.
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