A novel class of hydrogen-atom transfer (HAT) catalysts {based|primarily based} {on the|around the} readily {available|accessible|obtainable|offered|readily available|out there} and tunable 1,4-diazabicyclo[2.{2|two}.2]octane (DABCO) structure was {designed|developed|created|made}, and their photoinduced HAT catalysis {ability|capability|capacity|potential} was demonstrated. The {combination|mixture} {of the|from the|in the|on the|with the|of your} optimal HAT catalyst with an acridinium-based organophotoredox catalyst enables {highly|extremely|very|hugely} {efficient|effective} and site-selective C−H alkylation of substrates ranging from unactivated hydrocarbons to {complex|complicated} molecules. Notably, a HAT catalyst with {additional|extra|further|added|more} substituents adjacent to a nitrogen atom {further|additional} {improved|enhanced} the site-selectivity. Mechanistic {studies|research} {suggested|recommended} that the N-substituent {of the|from the|in the|on the|with the|of your} catalyst plays a {crucial|essential|vital|critical|important} {role|function|part}, assisting {in the|within the|inside the} generation of a dicationic aminium radical as an active species for the HAT {process|procedure|method|approach|course of action}. 106850-17-3 Formula Biotin NHS web PMID:30125989
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