Photochemical Reaction of S-Alkyl 3-Oxobutanethioate

Article abstract of DOI:10.1246/bcsj.56.1869

Irradiation of S-alkyl 3-oxobutanethioate (1) in benzene or ethanol yielded the disulfide 2.Irradiation of S-alkyl α-bromothioacetate also gave the disulfide 2.The photochemical reaction of the 3-oxobutanethioate 1 involves the Norrish Type I reaction followed by rapid fragmentation of the radical CH2COSR to the thiyl radical 5.