The photolysis of trans-isohumulone to dehydrohumulinic acid, a key route to the development of sunstruck flavour in beer
Abstract
trans-Isohumulone (2) is photolysed to dehydrohumulinic acid (5) by a Norrish type 1 cleavage, affording a precursor of 3-methylbut-2-ene-1-thiol, the compound responsible for the sunstruck flavour of beer.