Ricerc@Sapienza

In view of current scientific knowledge, it seems premature to
hypothesize a qualitative distinction between processes, networks,
and structures involved in abstract processes from those
based on perception, episodic, or procedural memories.
Predictive thought and mental travel strongly rely, at different
levels of consciousness, on past and ongoing sensory input,
bodily information (e.g., interoception), and the results of perceptual
elaboration.

A change in regioselectivity has been observed in the hydrogen atom transfer (HAT) reactions from 4-alkyl-N,N-dimethylbenzylamines (alkyl = ethyl, isopropyl, and benzyl) to the phthalimide N-oxyl radical (PINO) by effect of protonation. This result can be rationalized on the basis of an acid-induced deactivation of the C-H bonds ? to nitrogen toward HAT to PINO as evidenced by the 104-107-fold decrease in the HAT rate constants in acetonitrile following addition of 0.1 M HClO4.